Acid Definition and 683 Threads

chem question please help Homework Statement Ok, so there's .9734 g sample which contained monoprotic benzoic acid C6H5COOH and it's dissolved in 75 mL of water and titrated to the equivalence point with 31.78 mL of .09251 M NaOH solution. a) how many moles of benzoic acid were titrated b)...

Sulphate ions and nitric acid wouldn’t react? Is it because sulfuric acid is a very strong acid, while nitric acids are very weak. So the conjugate base of sulfuric acid which is sulphate ions is very weak and too weak to accept the proton from a weak acid like nitric acid. When you have a weak...

Concentrated sulfuric acid (18.4 molar) has a density of 11.84 g per ml dilution with water to 5.20 molar, density of 1.38 g per ml can be used as an a electroyte is lead batterys. What is the molality of the 5.20 molar H2SO4 solution? well I am not exactly sure where to start, but i...

Why isn't ammonia and hyronium considered triprotic acids? Both nitrogen and oxygen are highly electronegative so other negative charges would like to snactch their hydrogens. Is it because it would take too much energy due to its tetrahedral geometry which allows their charges to be distributed...

Homework Statement A vessel contains 500mL of .1 molar H2S solution. For H2S Ka1 = 1 x 10^-7 Ka2 = 1.3 x 10^-13. What will the pH be when 800mL of .1molar NaOH has been added. Homework Equations ph = -log([H]) ph = pka + log(B/A)The Attempt at a Solution This is how I started, I found the...

A 0.1 mol/L aqueous solution of weak monoprotic acid (contains one ionizable hydrogen atom) has a hydrogen ion concentration of 0.001mol/L. The value of Ka is: a) 10-6 b) 10-2 c) 10-3 d) 10-5 I took 0.001 and divided by 0.1 to get 10-2 and I also multiplied them together to get 10-5...

An Arrhenius acid a) in an ionic compound that contains hydrogen atoms b) produces an aqueous solution whose pH is greater than 7 c) releases hydrogen ions in aqueous solution d) is always a neutral molecule I know that c) is true and d) is false. However, I don't know if a) and b)...

A silver wire is added to nitric acid. I got 2Ag + 2HNO3 -> H2 + 2AgNO3. It's not right though, can anyone help me?

Hi, I have two questions that I am stuck on involving stearic acid solutions. 1a) 0.01mL of a solution containing 2 grams per litre of stearic acid in acetone is used. What mass of stearic acid is present in this drop of solution? Solution: 0.01ML solution X (1L/1000mL...

At the school where I teach, we recently had a recycling bin door blow off due to an explosion in a water bottle. Lots of heat was generated as evidenced by the melted, hard plastic and there was a sweet acidic smell to the liquid coating the inside of the bottle. The liquid had a pH of about...

I'm looking for an acid or whatever that will react with plaster of paris that has already set to a solid to dissolve it back into a liquid state. Basically, I want to cast something in a plaster of paris mold, but instead of breaking the plaster mold off I'll "melt" it off. I need to do it in...

Hi can someone help me out a little bit on this question How might acid precipitation threaten the fitness of the environment? I need to include molecular aspects such as pH.

I tried looking for this online, but didn't really find anything can someone help me out I need an example of a naturally- occurring acid-base buffering system in an organism

I want to learn the GFD lead acid batteries used in NPP. Have Exide and Deka ever supplied for NPP, or who are the main suppliers in this field? We know VRLA betteried dominate the market now, but have this type ever been use in NPP? As for UPS, do bettery suppliers provide UPS together...

It requires 46.5 mL of 0.215M NaOH to neutralize 15.0 mL of aqueous H2SO4. What was the molarity (M) of the acid sample? I'm not quite sure how to approach this quesiton, if anyone has and starter tips please let me know.

So last night, not really thinking about it, I mixed about 2/5L of Rum and about 3/5L of Fruit Punch together, they've been in the fridge since then. I smelled and tasted it, and it still seems alcoholic, so I'm guessing that either esterification is happening real slow, or its already happened...

1)Which of the following is not both a Bronsted-Lowry acid and a Bronsted-Lowry base? a. OH- b. HSO4- c. SH- d. HCO3- e. H2PO4- I knwo its not HCO3, H2PO4- AND HSO4-, but i cannot figure out whether OH can act as an acid and base or not, i know its produced when a base react...

I have a question concering acid base reactions. All strong acid-strong base reactions produce a water soluble salt and water with the exception of what? I need to know that along with the formula unit, total ionic and net ionic equation. Please any help would be appreciated. Thank you

Hello everybody I have tried to obtain but I have not been successful the dielectric strength or breakdown voltage values of following materials... these are: FORMIC ACID and GLYCERIN. (to room temperature) I need to know these values... thank you again. Norbert

Carboxyl acid strength and electronegativity... How do they relate?? Here is a question that I had on a recent chem II exam. Which is the strongest acid? A. CH3COOH B. CF3COOH C. CCl3COOH (Cl for chlorine, not Carbon 13) D. CBr3COOH E. CI3COOH I selected choice A because the...

When a metal displaces hydrogen from a non-oxidizing strong acid, which substance is the oxidizing agent? Thanks :smile:

I want to ask that there is any situation that the solution of Hydroclauric acid and water can make the pH of this solution gretater than 7.

i hv some problems , could anybody suggest me . does alkalinity ( as OH- ) and free acid value ( as CH3OOH ) can we convert any of them to be the same unit ? as i want to compare it is the same value or not but one it's show in OH and another one show it CH3OOH. or we could not compare as it's...

How to convert boric acid to boric oxide? To a few crystals of boric acid in a test-tube add a little methanol and some concentrated sulphuric acid. Heat and ignite the vapour evolved. Why should barium and copper interfere in this test?

You have just built a swimming pool that has the dimensions of 7.5m in length and is 5 metres in width. When filled with water the depth of the pool os exactly 1.5metres. The lable on the 5 litre pool acid bottle indicates that this has a conc of 33.0g/100ml of HCl. Makin the assumption that...

acetic acid Figured it out thanks

What materials for positive pole, negative pole and what acid when put together create a perfect battery? (I'm not talking about everyday purpose for a batery (so never-mind how bio-hazardous a material is), but a theoretical (greatest voltage, greatest current possible, yet stable enough (so...

Hi, I have searched rigorously for a solution to this problem but I seem to get inconclusive answers. I want to find the percentage purity of iron in cast iron and the best way to go about this is a redox titration. The first step is to reduce the Iron to Fe2+ . I intend to do this by...

My schoolbook states: My question is: What are the reactions that occur in the leaves that cause their danification? I googlelize and found: It also attacks trees more directly by eating holes in the waxy coating of leaves and needles, causing brown dead spots. That's ok, but how...

The acid dissociation constant as an equilibrium constant is affected by temperature. Right? Thus, could someone tell me if the reaction between a general acid and water: HA(aq) + H2O(l) ⇌ A-(aq) + H3O+(aq) is exothermic or endothermic? I think it is endothermic by similiarity with water...

I have a question here and i don't really know how to do it. I need to know : What is the pH of a mixture of 30ml 0.1M acetic acid and 30ml of 0.1M NaOH? \[HC_2 H_3 O_3 = 1.8*10^{ - 5} \] I'm not even sure what the equilibrium equation would be! Any help would be appreciated.

Does anyone happen to have the rate law for potassium permanganate reacting with oxalic acid ? I tried searching google with no avail :frown:

Which acid of the following set has the strongest conjugate base? a. CH4 b. NH3 c. H2O d. HF Is this correct? Any help is appreciated

Hydrocyanic acid is a weak acid (Ka = 4.9 x 10-10). If 0.1300 moles of gaseous HCN are dissolved in 0.8700 liters of water. Determine the pH of the HCN solution formed. HCN + H2O <-> H3O+ + CN- K_a = [CN-][H3O+]/[HCN] M HCN = 0.1300 mol HCN/0.87351338 L = 0.14882428 M HCN ?? For L...

1. What is the hydronium ion concentration and the pH for an aqueous solution of NH3 that has a hydroxide ion concentration of 2.25E-3 M? a. 4.44 x 10-11 M, 3.65 b. 4.44 x 10-11 M, 10.35 c. 4.44 x 10-12 M, 2.65 d. 4.44 x 10-12 M, 11.35 [OH] = 2.25E-3 pOH = -log(2.25E-3) = 2.6478...

1. Which Bronsted-Lowry acid has the strongest conjugate base? a. HBr b. HClO4 c. HF d. HI 2. What is the strongest acid among the following? a. HF b. HCl c. HBr d. HI Correct? Thanks.

1) In an experiment to determine the molecular weight and the ionization constant for ascorbic acid (vitamin C), a student dissolved 1.3717 grams of the acid in water to make 50.00 milliliters of solution. The entire solution was titrated with a 0.2211-molar NaOH solution. The pH was monitored...

Peptide nucleic acid has been hypothesised as the primordial genetic material: [SIZE="1"]Nelson, KE, M Levy, and SL Miller. 2000. Proc Natl Acad Sci 97(8):3868-3871. Peptide Nucleic Acids rather than RNA may have been the First Genetic Material. Nielson, PE. 1993. Orig Life Evol Biosph...

Hey can anyone help me with this question? What is the major product from the acid-catalyzed hydration of 3-methyl-2-pentene? a. 3-methylpentane b. 3-methyl-1-pentanol c. 3-methyl-2-pentanol d. 3-methyl-3-pentanol e. 3-methoxypentane Would the answer by D? My reasoning is that when...

Hi. I am having trouble with acid-base titration excercises. 0.02 L butanoic acid @ 0.1 M is titrated with 0.01 L NaOH solution @ 0.1 M. The Ka of butanoic acid is 1.54X10^-5. Find the pH. The answer is 4.81. I know how to find the pH when no NaOH is added, but I really don't see how the...

Hi. Is there any acid that will cut through Aliuminium (1mm thin).

Can anyone tell me how to calculate pH of an strong and weak acid with conc 10^-^7 M . Please just explain the method. i read a little about it. Why is it necessary to take into consideration the change in conc of H^+ from water? -Benzun

can someone help me think of an application of why a persion would need to test for acid and base?

Three fatty acid, when condense with glycerol, they donate or give out their OH- ions and combine with the H+ ions to form water and fat molecule. According to my chemistry teacher, an acid is a covalent molecular compound, which when dissolved in water, forms hydrogen ions H+ (aq). As fatty...

Hi, I got this question for my chemistry class, and I simply don't know where to start. Do I have to find out the volume of HCl first? The label on a bottle of hydrochloric acid says the solution is 3.7% hydrogen chloride. You wish to the determine the actual concentration. You fill a burette...

Hello. I am looking for some results of the experiment. The results should be the loss in weight of the marble chips with the Acid at different strengths ( 2M, 1M, 0.5M, 0.25M and 0.25M). Thanks.

What is going on here? Should I shelter my children from the rain? One of my friends was telling me about acid rain how it used to happen. I said I don't remember it raining acid. ? :cry: The unknown! But seriously, is this a real threat, was it? Was it just a bunch of hype caused by...

I need help: A beaker with 200 of a 0.1M acetic acid buffer with a pH of 5.20 is sitting on a benchtop. A student adds 8.60 of a 0.380 solution to the beaker. How much will the pH change? The of acetic acid is 4.76.

How many moles of H3O+ must be added to one liter of a solution to adjust the pH from 7.17 to 5.85? Correct answer 1.34E-6 (1.34 * 10-6) The correct answer is given, however I would like to know how to do this problem.

hi all, i understand that maleic acid being in cis form is more acidic than fumaric acid. is it due to the fact that because of the cis configuration, it can form intramolecular H bonds which then stablises the monoanion through resonance or? then in the monoanion form, furamate monoanion is...