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  4. At 25° textC the pH of water is 7. When temperature of water is increased to 70° textC than pH of water and nature of water is

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Q. At $25^{^\circ } \text{C}$ the pH of water is 7. When temperature of water is increased to $70^{^\circ } \text{C}$ than pH of water and nature of water is

NTA AbhyasNTA Abhyas 2022

Solution:

High temperature pH and pOH of water decreases so, it will be less then 7 but $\left[\text{H}^{+}\right] = \left[\text{OH}^{-}\right]$ so solution become neutral.