Ammonia Definition and 92 Threads

Homework Statement why must ammonia present in excess in order to get mono-substituted primary amine Homework Equations The Attempt at a Solution

Homework Statement The following chemical reaction takes place inside a reactor where 80% conversion is obtained with an equimolar mixture of NH3 and O2 fed at the flow rate of 100 mol/h. 4NH3 + 5O2 ⇔ 4NO + 6H2O What are the output rates of all species? There's a diagram shown where...

Comes now the web page http://www.dr-fix-it.com/absorption.html which says that the ammonia-based absorption-cycle refrigerators ==do== operate only because droplets of liquid ammonia dripping into the ambient of the evaporator (= 200psi of pure hydrogen gas) can only continue to...

Hi, I'm looking at a question which asks how one can test for ammonia in [NH4]2Fe[SO4]2 The answer says that you add sodium hydroxide, and get [NH4]2Fe[SO4]2 + 2 NaOH -> [NH4]2Fe(OH)2 + 2 NaSO4 This is what I don't get: it then says you test the ammonia gas with litmus paper, or with HCL...

Homework Statement I had a problem in inorganic chemistry that required I know what forms when strontium dissolves in ammonia. Looking at the answer, it says that Sr + NH3 ---> Sr[NH3]6 I'm not sure how I would have been able to predict that this is what formed. Homework...

Hi, I'm an undergraduate taking the basic quantum classes and on my own, I'm trying to wrap my mind around how symmetry and group theory applies in Q.M. and theoretical physics in general; it's coming along slowly but surely! Can someone please explain why the ammonia molecule is said to...

Hi there, Does anyone know why large scale ammonia (60000 tons) storage is done under a temperature of -33ºC and P=1bar? Why not a bit higher P and T?

Homework Statement Explain why the H-N-H bond angle in ammonia is less than that of H-C-H in methane. Though this is a worked example. I just want to understand the explanation given for the problem. Homework Equations The Attempt at a Solution As I said, this is a worked...

I am given a project on Revamp of Spring Supports at an Ammonia Plant where I work as a Maintenance Engineer. We are facing serious issues during the project, and hence I need guidance from experienced persons in the field. Briefly described, our plant was relocated from a place where it was in...

I'm trying to follow Feynman's explanation on page 9-3 of Volume 3 of The Feynman Lectures on Physics. I've attached a copy of the section in question. To normalize CII he notes that < II | II > = < II | 1 >< 1 | II > + < II | 2 >< 2 | II > = 1 I am not clear how he derives the conclusion...

Homework Statement A West Virginia coal burned in a steam generator has the following mass analysis: carbon 75.0%, oxygen 6.7%, hydrogen 5.0%, water 2.5%, sulfur 2.3%, nitrogen 1.5%, ash 7.0%. How much limestone, CaCO3, in kg/day is needed to remove 96% of the SO2 produced from combustion...

I am quite confused by this, because I have not yet found a compound that has a higher one. My understanding is that specific heat capacity of a molecule is based on a combination of the number of degrees of freedom the molecule has and the number of vibrational modes. As for the second factor...

Homework Statement Experimental evidence suggests that the nitrogen atom in ammonia, NH3 , has four orbitals in the shape of a pyramid or tetrahedron. Draw an energy-level diagram to show the formation of these orbitals. (Hint: No electron promotion is required.) Homework Equations...

I have attached a copy of my homework paper to this post. I'm fairly certain the answers are not correct. The quality for both parts is 1.00. In addition, the quality increases (to the fourth decimal place) in the 0.0 degree Fahrenheit sample. I'd expect the quality to go down due to less heat...

I need some help calculating basic chemistry. I need to know how much ammonia I need to add to a volume of water to reach the appropriate pH level. I have 50 cubic meters of demin water that I need to raise to a pH of 11. Volume is not flowing. I am using aqueous ammonia of 25%...

Homework Statement Is the reaction for the production of ammonia an endothermic reaction or an exothermic reaction? Explain. Homework Equations n/a The Attempt at a Solution I know that the production of ammonia in the Haber process is indeed exothermic and that the backwards reaction (NH3...

Homework Statement A mixture is made by adding 25 ml of 0.100M HCl to 100ml of 0.025M ammonia hydroxide. Kd = 1.76 x 10^-5 . My task is to calculate the pH. Homework Equations I think this is the reaction that follows: NH4OH + HCl <--> NH4 + H2O + Cl The Attempt at a Solution I...

Homework Statement Ammonia NH3 is made by the haber process: N2 + 3H2 --> 2NH3 The nitrogen required for this process is obtained from air by using the air to burn natural gas CH4 , thereby removing the oxygen from the air, leaving behind only nitrogen. The hydrogen required is obtained...

Where can I find updated data about the vibrational energy levels of ammonia? The papers I have are too old: 1935, etc.

I'm not a science student. So, please be simple and straightforward. I remember once I smelled a sample of urine which had been kept there for some days. It smelled so gross that I was going to puke. Someone said that it was because of ammonia which had resulted from break down of urea. I...

What is a cost efficient, yet accurate way to detect ammonia in a gaseous mixture?

Homework Statement Ammoniacal nitrogen can be determined by treatment of the sample with chloroplatinic acid; the product is slightly soluble ammonium chloroplatinate: H2PtCl6 + 2NH4 --> (NH4)2PtCl6 + 2H The precipitate decomposes on ignition, yielding metallic platinum and gaseous...

Ammonia solution turns blue when alkali and alkaline Earth metals are dissolved in it. Why is the blue colour common to all? Is it because of the dissolution of electrons that is common in all cases?

I'm guessing this is the right forum to post in. Ammonia shares many properties with water. It is polar, it is amphoteric, it reacts with itself to form its acid and base conjugates NH4+ and NH2-. Just as water is our basis of life, could another species use ammonia like we use water...

Hi guys, i remember there is a process that produce ammonia from nitrogen oxides, either NO2 or NO but i couldn't remember the equation and couldn't find it online, all i get was haber process when the word ammonia is there. Anyone have any idea?

How would I remove the water from household ammonia?

http://session.masteringphysics.com/problemAsset/1003323/16/152457.jpg Part A The line between which two points would describe a process of liquid ammonia boiling completely away? Express the answer as two letters representing the endpoints of the line in order so that going from the first...

Homework Statement Ammonia acts as a base in aqueous solution; Kb is equal to 1.8 x 10-5. What is the Ka for the ammonium ion NH4+ in aqueous solution? Homework Equations The Attempt at a Solution I am totally lost for this question, can someone please start me off? all i know...

Homework Statement I am trying to determine the products of the equation CH3CO2H(aq) + NH3 Homework Equations Acid Base reaction The Attempt at a Solution I know that this is an acid-base reaction so I assumed it would form a salt (acetate) and water but that doesn't account for...

Researchers think they have found traces of ammonia in Mars' athmosphere. Since ammonia is degraded quickly there, if this were true, it would mean the presence of some ammonia-producing source on Mars. THe best bets for that would be either active volcanoes or microbes, but since active...

is the catalytic oxidation of ammonia a reversible reaction? my teacher talked about this, but i can't remember what she actually said.

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I accidentally stored some 2M NH3 in polycarbonate bottles , and now they're toast. It produced some white crystals and a brown suspension. I've done a little Googling and haven't found what the possible products are. Do you know what they could be? I am mostly concerned about disposal, and...

propylamine ammonia basicity Homework Statement suggest which one of ammonia or propyl amine is more basic. Homework Equations The Attempt at a Solution i know that a base is a proton acceptor. i am trying to figure out which one of them would accept a proton more readily.

Hello all, I had chemistry a long time ago, but now I am very rusty at it :frown: so I am hoping you can get me started with this problem I have; A particular solution of ammonia (Kb = 1.8 x 10-5) has a pH of 8.3. What is the concentration of ammonia in this solution? Is it the...

Homework Statement An ammonia molecule (NH_3) has a permanent electric dipole moment 5.0 * 10^-30 Cm . A proton is 2.50 nm from the molecule in the plane that bisects the dipole. What is the electric force of the molecule on the proton? Homework Equations E_dipole = K 2p / r^3 (on axis...

Hello , We tried to demonstrate preparation of Ammonia by mixing Ammonium Chloride and Calcium Hydroxide in round bottom flask mixed in the proportion of 2:3 . The flask was in a slanting position with the delivery tube attached to a decicator with Calcium Oxide for drying the gas. A Flask...

Which is the best way to put out the fire created by the leakage of ammonia? Thank you. :biggrin:

Why did Fritz Haber develop a process for systhesis of ammonia? Which are the other production processes of ammonia? (except the ones named below) One more time I need help. Thank you. :smile:

I know that in order to be helped we must present our thinking, but I cannot do that since my knowledge in this topic is small and I don't have time to make a search because I have to study for my math's test that is tomorrow. I hope you understand. Imagine that you are going to visit a...

Here is the problem: Given pKa=9.3 what is pH of 0.005 mol/l ammonia solution. The problem is, I don't get this pKa part. I mean, I know t means Ka=5.0119*10^-10 but ammonia is a base, not acid. G

Why do we use alcoholic Ammonia not Ammonia only or aqueous ammonia while using it to treat haloalkanes to form primary,secondary or tertiary amines. same for treatment of haloalkanes with alcoholic silver cyanide to form alkyl iso cyanide.why don't we use aqueos AgCN Thanx