What is the value of Ka for the weak acid? Chemistry What is the value of Ka for the weak acid? a. 1.3 x 10^-2 b. 3.2 x 10^-3 c. 1.8 x 10^-4 d. 3.1 x 10^-8 e. 6.3 x 10^-12 Answer: B Share this Share on FacebookTweet on TwitterPlus on Google+