Question

1.A student mistakenly calculates the pH of a 1.0x10-7 M HI solution to be 7.0. Explain...

1.A student mistakenly calculates the pH of a 1.0x10-7 M HI solution to be 7.0. Explain why the student is incorrect and calculate the correct pH.Show your work.

2.Draw the Lewis structure of the Amphetamine ammonium ion ( (C9H13N) is a weak base with a pKb 4.2.)

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Calculate the pH of a solution containing an amphetamine concentration of 250 mg/ Amphetamine (C9H13N) is...
Calculate the pH of a solution containing an amphetamine concentration of 250 mg/ Amphetamine (C9H13N) is a weak base with a pKb of 4.2.
What is the pH of a 0.49 M solution of ammonium iodide (NH4I), given that ammonia...
What is the pH of a 0.49 M solution of ammonium iodide (NH4I), given that ammonia (NH3) is a weak base with Kb = 1.78 × 10-5? A. 7.0 B. 9.2 C. 4.8
1. What is the pH of a 0.000682 M solution of NaOH? 2. a)What is the...
1. What is the pH of a 0.000682 M solution of NaOH? 2. a)What is the kb for F- given that the ka for HF is 6.8*10-4 b)What is the pH of a 0.292 M solution of NaF? 3. What is the pH of a 0.03 M solution of CaO? HINT: CaO is ionic and dissociates into ions. What is the oxygen ion that results? What kind of an acid or base is it? You need to write out the...
Consider a 0.2 M  solution of   dimethylammonium chloride. The ion   dimethylammonium is the conjugate acid of the...
Consider a 0.2 M  solution of   dimethylammonium chloride. The ion   dimethylammonium is the conjugate acid of the the weak base dimethylamine.The pKb  of dimethylamine is 3.27   You can search for the structure of this compound online, although precise knowledge of the structure is not needed. Don't round to avoid being outside the 5% margin of error. Part A: Calculate  [H+] (units in M) Part B: Calculate the concentration of dimethylammonium ions. (units in M) [Answer was 0.200 M] Part C: Calculate the concentration...
1). Consider a 0.4 M solution of   anilinium chloride. The ion   anilinium is the conjugate acid...
1). Consider a 0.4 M solution of   anilinium chloride. The ion   anilinium is the conjugate acid of the the weak base aniline.The pKb   of aniline is 9.13   Part a).   Calculate  [H+] __________ M Part b). Calculate the concentration of   anilinium ions. __________ M Part c). Calculate the concentration of   aniline in equilibrium. _________ M Part d). Calculate [OH−] ________ M Part e). Calculate [Cl-] ________ M Part f). Calculate the pH _______ M 2). Calculate the pH and the concentration [Na+] =of all...
Question #1) a) What is the pH of a 0.273 M aqueous solution of potassium hypochlorite,...
Question #1) a) What is the pH of a 0.273 M aqueous solution of potassium hypochlorite, KClO at 25 °C? (Ka for HClO = 3.5×10-8) b) The value of Ka for acetic acid is 1.80×10-5. What is the value of Kb, for its conjugate base, CH3COO-? c) The hydronium ion concentration of an aqueous solution of 0.456 M ammonia is ... [H3O+] = ____ M. d) In the laboratory, a general chemistry student measured the pH of a 0.456 M...
What is the pH of a 0.15 M solution of HClO? Ka for HClO = 3.5...
What is the pH of a 0.15 M solution of HClO? Ka for HClO = 3.5 x 10-8   The value of Ka for the weak acid Benzoic acid (C6H6COOH) is 1.5 × 10-5. What are the equilibrium concentrations of all species if 1.50 g of Benzoic acid is dissolved in enough water to make a 250.0 mL solution? What is the pH of the solution? Ammonium ion is the conjugate acid of Ammonia.   What is the pH of a 0.25...
1. Calculate the hydrogen ion concentration, [H+ ], for the two weak acids (pH=-log[H+ ], or...
1. Calculate the hydrogen ion concentration, [H+ ], for the two weak acids (pH=-log[H+ ], or [H+ ]=antilog (-pH). If you have difficulty finding or using the antilog function on your calculator, simply use this: [H+ ]=10-pH . 2. Calculate the hydroxide ion concentration, [OH- ], for the weak base using this formula: pOH=14-pH, then [OH- ]=antilog (-pOH) or [OH-]=10-pOH. 3. Calculate the molar concentrations of the vinegar as well as ammonia. Both are industry standard 5.00% by mass solutions...
1.) An aqueous solution contains 0.23 M hydrofluoric acid. One Liter of this solution could be...
1.) An aqueous solution contains 0.23 M hydrofluoric acid. One Liter of this solution could be converted into a buffer by the addition of: (Assume that the volume remains constant as each substance is added.) 0.12 mol HClO4 0.23 mol KNO3 0.24 mol HClO4 0.24 mol KF 0.117 mol NaOH 2.) An aqueous solution contains 0.34 M ammonia. One liter of this solution could be converted into a buffer by the addition of: (Assume that the volume remains constant as...
1.) You will work with 0.10 M acetic acid and 17 M acetic acid in this...
1.) You will work with 0.10 M acetic acid and 17 M acetic acid in this experiment. What is the relationship between concentration and ionization? Explain the reason for this relationship 2.) Explain hydrolysis, i.e, what types of molecules undergo hydrolysis (be specific) and show equations for reactions of acid, base, and salt hydrolysis not used as examples in the introduction to this experiment 3.) In Part C: Hydrolysis of Salts, you will calibrate the pH probe prior to testing...