At 40.°C the value of Kw is 2.92 × 10-14. a. Calculate the [H+] and [OH-] in pure water at 40.°C. b. What is the pH of pure water at 40.°C? c. If the hydroxide ion concentration in a solution is 0.10 M. what is the pH at 40.°C.?

4. Calculate [H,O*], [OH ], pH, and pOH for 6.5 x 10³ M H₂SO, solution (at 25 °C). a. [H,0¹] b. [OH] c. pH d. pOH

Hydrochloric acid is a strong acid. In a 0.01M solution, what are the pH value and the concentration of hydroxide ion? Select one: a. pH = 0.01        [OH-] = 0.01 mol dm-3 b. pH = 2             [OH-] = 10-12 mol dm-3 c. pH = 2             [OH-] = 12 mol dm-3 d. pH = 0.01        [OH-] = 12 mol dm-3

For each of the following cases, decide whether the pH is less than 7, equal to 7, or greater than 7. a. 85 mL of 0.30 M H2S is mixed with 85 mL of 0.60 M NaOH. O The pH of the solution is less than 7. O The pH of the solution is equal to 7. O The pH of the solution is greater than 7. b. 70. mL of 0.65 M acetic acid, CH3 CO,H is mixed with 70. mL of 0.65 M NaOH. O The pH of the solution is less than 7. O The pH of the solution is equal to 7. O The pH of the solution is greater than 7. c. 80. mL of 0.65 M H2SO4 is mixed with 80. mL of 0.65 M NAOH. O The pH of the solution is less than 7. O The pH of the solution is equal to 7. O The pH of the solution is greater than 7.

Calculate the pH of each of these solutions.  is the solution acidic, basic, or neutral ?.       a.  a solution with a OH- concentration of 5.5 x 10-12 M       b.  a solution with a H3O+ concentration of 3.2 x 10-8 M       c.  a solution with a pOH of 7.00

A solution of LIOH was found to have a pH of 13.14 at 25 °C. What is the concentration of LIOH? Oa. 2.58 M Оb. 13.14 М Oc. 2.0 x 10-6 M Od. 2.36 M Oe. 0.14 M