1. The problem statement, all variables and given/known data At 10 C, the concentration of OH in 1 M of HCl is approximately: Answer: 3x10^15 2. Relevant equations Kw=KaKb 3. The attempt at a solution This answer throws me off. If we assume that HCl completely dissociates, we use the [H+] from the acid in the above equation: 1x10^-14 = 1 [OH] I get 1 x 10^-14, not 3 x 10^-15. What am I missing here? Is my book wrong? Thanks.