Question

Is a solution with pH $6$ acidic, basic or neutral? Justify

Answer 1

A solution with pH $6$ will be acidic when the ionic product of water is $1\times {10}^{-14}{mole}^2/{litre}^2$. In such a case, a solution with pH less than $7$ is acidic in nature. On increasing the temperature, the ionic product of water increases due to increase in the ionization of water. When the ionic product of water increases to $1\times {10}^{-12}{mole}^2/{litre}^2$, a solution with pH $6$ will be neutral and below $6$ will be acidic in nature.