1. Tardigrade
  2. Question
  3. Chemistry
  4. At 90° C, pure water has H 3 O +ion concentration of 10-6 mol / L -1. The Kw at 90° C is :

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. At $90^{\circ} C$, pure water has $H _{3} O ^{+}$ion concentration of $10^{-6} mol / L ^{-1}$. The $K_{w}$ at $90^{\circ} C$ is :

ManipalManipal 2005Equilibrium

Solution:

$ K_{w}=\left[ H ^{+}\right]\left[ OH ^{-}\right] $
$=\left(10^{-6}\right) \times\left(10^{-6}\right)$
$\left(\because\left[ H ^{+}\right]=\left[ OH ^{-}\right]\right) $
$=10^{-12} $