Mathematics Quizzes Ionic Equilibria Test

Question:
At 70C pure water has (H₃0+) = 10^-8 mol / lit, the value of K_w at 90C is:

Option A):
10^-16
Option B):
10^-6
Option C):
10^-12
Option D):
10^-14

Correct Answer is Option A):
10^-16