1.

The pH scale provides a convenient way to express the acidity and basicity of dilute aqueous solution. It depends upon the degree of dissociation of acids and bases in water Ionic product of water in the product of molar concentration of H^+ And OH^- ions at equilibrium at a given temperature. At 25^@C, K_w is 10 xx 10^(-14). The salts of weak bases and strong acids or weak acids and strong bases also give acidic or basic solution due to hydrolysis. 1 mL of 0.01 M HCl is added to 1L of sodium chloride solution. What will be the pH of the resulting solution?

Answer»

Solution :NACL is neutral , it simply DILUTES the HCl solution from 1 mL to 100 mL so that
`[H^+]=0.01/1000=10^(-5)` M
pH =-log `(10^(-5))` =5.


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