pH of a 10−3 M solution of hydrochloric acid will be
1.3
2.0
3.0
4.5
[H+] = 10−3 M, pH = −log[10−3], pH = 3
If the equilibrium constant of the reaction 2HI ⇌ H2 + I2 is 0.25, then the
equilibrium constant of the reaction H2 + I2 ⇌ 2HI would be