Calculate the molar H3O+ion concentration of a solution that has a pH of (A) 4.31 (B) 13.89 (C) 5.32 (D) 4.48

What is the pH of a 0.40 M solution of benzoic acid, C6H5COOH?

(a) A 50.0 mL solution is prepared to be 1.29 M acetylsalicylic acid. In the first step, 8.55 mL of NaOH is titrated into the solution until the pH is exactly 5.0. What is the concentration of the titrant (NaOH)? (b) In the second step, enough 5.85 M nitric acid is added to the solution after the titration in part (a) is complete until the pH is one unit lower than the pKa of acetylsalicylic acid. What volume (mL) of nitric acid was added?

Calculate the pH and the pOH of each of the following solutions at 25 °C for which the substances ionize completely:(a) 0.200 M HCl(b) 0.0143 M NaOH(c) 3.0 M HNO3(d) 0.0031 M Ca(OH)2

The H3O+ ion mole concentration of the following solution was measured at 25 °C. Find pH and pOH of each solution.   (a) 1.5X10-5 mol/dm3(b) 1.5 mmol/dm

The pH of a 0.0071 M solution of HNO3 is

Identify the acid, base, conjugate acid and conjugate base in the following reactions: HF (aq) + H,O (1) H;O* (aq) + F ¯(aq) CH;CH,NH, (aq) + H,O (1) CH;CH,NH;" (aq)+OH (aq)

7 (a) Describe what happens when each of the following molecules is separately dissolved in water and illustrate with an equation in each case: (i) ethanoic acid (CH₂COOH) (ii) ammonia (NH3) (b) Identify the conjugate acids and bases in the substances mentioned in question 7(a) above. (c) Explain the difference between: (i) a strong acid and weak acid and (ii) a strong base and a weak base

(a) Papaverine hydrochloride is an alkaloid drug used as a muscle relaxant, particularly for acute myocardial infarctions and angina It is a weak acid. If a 0.205 M solution of papaverine hydrochloride has a pH of 3.31, what is its Ka?

2-11 2.19] A solution has an H+ concentration of 10-5 M. (a) What is the pH of this solution? (b) What is the pOH (Assume that the temperature of the solution is 25°C.) Answer: (a) 5 (b) 9 BM