Ionization Definition and 270 Threads

Homework Statement I'm not sure if this is really introductory physics... tell me if you think I'd have more luck in the advanced physics section. The problem: You have a gas filled counter, in the form of a parallel plate capacitor. It has capacitance 9.1 x 10-9 F. It takes 20 eV of energy...

This question is not a homework question. I am having a little trouble with the ionization energy graph. I understand that the noble gasses are the most stable and hence require the most energy to be ionised, but why is it that after you add even number of electrons the ionization energy...

Homework Statement I have an exam on Monday and do not know how to do this example problem. Use the following information to calculate the first ionization energy of Li. LiF(s) → Li+(g) + F −(g) 1050 kJ/mol LiF Li(s) + ½ F2(g) → LiF(s) −617 kJ/mol Li F2(g) → 2 F(g) 160 kJ/mol F2 Li(s) →...

Hydrogen has an ionization energy of 13.6eV. If 1eV is defined as the velocity of an electron produced by a potential of one volt. Does this mean that a free electron contained in a hydrogen gas could cause impact ionization if a potential of 13.6 Volts were applied to a metal plate within...

I have been wondering how an atom is ionized and multiply ionized in an electric field? In a single ionization, does only one electron go through each transition until it is ionized? What about in a multiple ionization? Would the first electron travel through all transitions while the...

If I have a group of atoms in a high voltage field, and I want to use photon energy to aid the ionization of the atoms what wavelength(s) would best be used to have the highest ionization efficiency? The shortest wavelength available? Or the resonant wavelength for each excitation level?

I don't get how ionization is an endothermic reaction. In an endothermic Reactions: the reactants have less potential energy than do the products. Energy must be input in order to raise the particles up to the higher energy level. The ionization energy, is the energy required to completely...

Homework Statement I have an electric field that is nominally 30 kV/m, and I'm trying to figure out if nitrogen could be getting ionized in a field of that strength. The 1st ionization energy of nitrogen is 1402.3 kJ mol-1. What is the relationship between joules/mole and...

Homework Statement Estimate the energy of an electron in a hydrogen atom and hence deduce an approximate formula for the ionization energy of hydrogen. How accurate is your formula? Homework Equations Don't know but it is in the field of quantum mechanics The Attempt at a Solution...

Homework Statement In this experiment you will find the ionization constant for ammonia, a weak base. I have completed the experiment, and have the following: Initial concentration of NH3: 3.708mol/L Initial pH of NH3: 10.26 Homework Equations NH3(aq) + H2O(l) <--> NH4+(aq) +...

[FONT="Times New Roman"][SIZE="3"] So I'm preparing to run an experiment involving Ionization. Unfortunately during my research, I've found out that when air is ionized (much like a lightning strike) it produces ozone. I learned that ozone molecules are unstable and usually dissipate back into...

Homework Statement Find the enthalpy of ionization of the weak acid, ΔH3 H3O+ + OH- <-> 2H2O....ΔH1 HA + OH- + H2O <-> A- + 2H2O...ΔH2 HA + H2O <-> H3O+ A-...ΔH3 The Attempt at a Solution I won't show it here but I've found ΔH1 to be -52.33 kJ/mol and ΔH2 to be -5.21 kJ/mol. I...

Hi all, I would like to know what the difference between ionization, binding, atomization and cohesive energies is? Regards, Sara

Homework Statement A 0.085 M aqueous solution of a weak base is known to be 1.6 percent ionized. Calculate the pH of the solution. Homework Equations %Ionization= ([OH-] derived from base/ initial [base]) x 100% pOH=-log[OH-}The Attempt at a Solution %Ionization= ([OH-] derived from base/...

I know how to do it one way, which is write down the chemical formula, balance it, and from the molarity of the products/reactants you calculate your H3O or OH concentrations and go on, but it seems to take forever. This is worse when I need to calculate pH for a whole list of different...

Homework Statement A hydrogen atom has an electron in the fundamental state. a. Show that a radiation with λ = 50 nm will ionize the atom. b. What will be the excess kinetic energy of the electron in joules? Round up your answer to the nearest hundredth. Homework Equations 1/lambda=...

Is it possible to accelerate an atom (i.e. hydrogen), and have the force from acceleration overcome the binding force (between proton and electron), and ionize the hydrogen atom?

I solved an assignment problem and I came to the conclusion that the % ionization of a strong acid decreases as the initial concentration of the ionized acid is increased. I don't fully understand why this is..? Any clarification would be greatly appreciated! Thanks in advance!

Homework Statement Rewrite each of the following lists from largest to smallest value of each property: First Ionization Energy Be, P, Ne, F Homework Equations Our book says the general trend for ionization energy on the periodic table is to increase from left to right and...

Homework Statement According to the Bohr theory, what is the ionization energy of atomic hydrogen in kJ/mol? Homework Equations Bohr equation: E = (-2.18 x 10-18 J)(1/n2) The Attempt at a Solution I don't have any general idea on how to do this problem :( please help! The answer is...

Ok so I'm using the equation E= (-Z^2 x Rh)/ n^2 RH is a constant of 2.178x10^-18 I determined that the second ionization energy of He is the ionization energy of He+. If my math is right, the ionization energy is 8.712x10^-18... this is assuming n=1, as I've determined it from ground...

hey there, I am just school student and is a little bit confused with this quantum physics question. what is the difference between ionization energy and photoelectric emission? is the difference just that ionization energy is an electron removed from an atom in its gaseous state while that of...

Could we ionize He also if it has the biggest ionization energy?

I'm trying to get my head around how a gas is thermally ionised. I understand you can ionize a gas by irradiating it with some short wave radiation to overcome the work function of the atom, right? But I also know you can thermally ionize a gas, i.e. the collisions between the particles...

Hi. I need to calculate the ionization cross section in the accelerator storage ring. In all science works i read, that this parameter is over 2 Mbarn. I use the GEANT4's formula for cross section and got the cross section is ~milibarn. Please help me to calculate this cross-section. you can...

I get the photo-electric effect but I am just wandering, is that the only principal on which lasers function? I mean do lasers "cut" materials by ionizing the atoms?

Homework Statement The first ionization potential of potassium (Z=19) is 4.34eV, and the 4p--->4s transition occurs at approximately 768nm. Use this information to find the values of the quantum defects \delta(0) and \delta(1) for potassium, and hence to estimate the wavelength of the 6p--->4s...

First, I want to understand something. Everything I look at suggests that the ionization energy of an atom or ion is suppose to be the energy needed to remove the 'outermost electron'- which I find troubling conceptually, since they also refer to this as the one with the highest energy. Wouldn't...

When an electric field is high enough, electrons are not so easily confined to molecules or atoms. This has been the basis of field ionization for mass spectrometry. But what if the field is not enough to ionize, but close. Would it be easier to ionize the atom or molecule with less energy? Any...

I'm calculating an ionization cross section in partially ionized plasma, with taking into account of correlation effects. I'm trying to do it with help of variation phase method. Please, help me to find some link to useful articles.

Homework Statement What is the ionization energy for He+ Z=2 Homework Equations E = -13.6 z^2 / n^2 The Attempt at a Solution I plugged 2 in for Z and 1 in for n, and got 54.4 eV. I checked many charts and it said the ionization energy for Helium was around 24.6 eV.

I'm fairly familiar with the design and operation of an ion engine, although I do have a two questions in regard to its operation. 1) Normally, an ion engine would be used in space (which is naturally a vacuum) and would output its given thrust. Prior to space flight, is there a need to...

acetic acid is a weak acid that ionizes in solution as follows CH3COOH--->CH3COO- + H+ if the freezing point of a .106 m CH3COOH solution is -.203 celcius, calculate the percent of the acid that has undergone ionization. here's what i did, i took .203 celcius=i)1.86 celcius/m (.106m)...

Homework Statement Does an AM radio station broadcasting at 750 KHz emit enough energy to ionize a hydrogen atom? Homework Equations Frequency = 7.5E+5 /s Ionization E of H atom = 2.18E-18 J Planck constant h = 6.625E-34 J-s AM Radio speed = c Energy AM radio wave = h*frequency...

Alright, so I'm looking into electron-impact ionization of Argon, and subsequently the collision ionization cross-section. While i have found articles that experimentally find these cross sections at different energies (energies of the electrons that is), such as here...

What is the definition of ionization? For example, in the case of Hydrogen atom, the Coulomb force is the long-range, so the electron and its wave function is always affected by the left proton. So the QUANTUM description is actually difficult and unclear. Could anyone explain to the the...

I have a couple questions on my homework that I am stuck on. 1. Write the equations that represent the first three ionizations of the aluminum atom. Be sure to include phases and charges. 2. Write the equations that represent the acquisition of the two electrons of the sulfur atom forming the...

Hey, I was wondering if anyone could help me out with this. I need to take the Bohr energy equation ( En= -2.178 x 10^-18) (Z^2 /n^2) and the Inoization energy equation ( IE= Einfinity - Eground state). I need to somehow modify the bohr energy equation that can be used to find the inonization...

Question: The first and second ionization energies of K are 419 kJ/mol and 3052 kJ/mol, and those of Ca are 590 kJ/mol and 1145 kJ/mol, respectively. Compare their values and comment on the differeneces. I'm thinking of two different ways of how to do this even though I think both are wrong...

A neon sign is a gas discharge tube in which electrons traveling from the cathode to anode collide with neon atoms in dicharge tube and knocks electrons off of them. As electrons return to the neon ions and drop to lower energy levels, light is given off. How fast would an electron have to be...

[SOLVED] Ionization and light I've been working on this problem and I'm not coming up with a reasonable answer. If the Bohr model is used, what frequency of light would be required for ionization of hydrogen? I know that \Delta E = h \nu, where E is energy, h is Planck's constant, and \nu is...

Question says: Approximately how much energy would be required to ionize all the hydrogen in the Sun? How does this ionization energy compare with the thermal energy of the Sun? (Assume the uniform density approximation. The ionization energy of a single hydrogen atom is 2.18e−18 J.) Am...

Need a formula for Ionization HELP! What is the greatest wavelength of radiation that will ionize an unexcited Hydrogen atom? If someone could give me a fomula to work with I'd be EVER so greatful! I've been working on this for HOURS.

Question: Aspirin is a weak acid. (a) Calculate pH of 0.2M solution of aspirin at 25 degrees celsius (Ka = 3.0 x 10^-4 at 25 degrees celcius). (b) Determine the percent ionisation (c) Explain qualitatively the effect of adding 0.01M hydrochloric acid to the aspirin solution. (d)...

for the following question: a proton capatures a negative muon (mass=207me). Find the ionization energy of the atom. my problem: the answer in my textbook says to use 13.6eV for the E1 ionization energy, but why? i thougth that that value is only true for hydrogen atoms, but that question...

Which alkali metal forms preferentially an oxide rather than a peroxide or superoxide? a. Na b. Rb c. Li d. K Of the following, which element has the highest first ionization energy? a. Na b. Al c. P d. Cl Are these correct? Thanks.

Which ionization process requires the most energy? a. P(g) --> P+(g) + e- b. P3+(g) --> P4+(g) + e- c. P2+(g) --> P3+(g) + e- d. P+(g) --> P2+(g) + e- Is it b. P3+(g) --> P4+(g) + e- because this is the fourth ionization energy (which requires highest amt.)...

Which element in each of the following sets would you expect to have the highest second ionization energy? How do I figure this out? a. Na, Mg, Al b. Na, K, Fe c. Li, Be, Mg Can you help me? Thanks

This is a post-lab question for my chemistry lab but it is kind of physics too so I thought I'd post it here (the other sciences sections don't much response).. It's confusing because the questions are supposed to go along with what we are learning in the chemistry lecture, but we're behind in...

PLEASE HELP! Ionization Energy Question Hello everyone, I am having some trouble with this question. If one of you could point me in the right direction i would be really grateful. 1. Since the ionization process takes an electron from its ground state to the zero level of the energy...