Question & Answer: If a neutral solution of water, with pH = 7.00, is cooled to 10oC, the pH rises to 7.27. Which of…..

If a neutral solution of water, with pH = 7.00, is cooled to 10^oC, the pH rises to 7.27. Which of the following three statements is correct for the cooled water:

(i) [H⁺] > [OH^–],

(ii) [H⁺] = [OH^–], or

(iii) [H⁺] < [OH^–]?

2) Calculate the pH of a 0.075 M solution of ethylamine (C₂H₅NH₂; K_b = 6.4*10^-4).