If are in A.P. then equals:
As we have learnt,
If a, b, c are in AP, then 2b = a + c
Now,
If 1, are in AP
so,
50 mL of 0.2 M ammonia solution is treated with 25 mL of 0.2 M HCl. If pKb of ammonia solution is 4.75, the pH of the mixture will be : Option: 1 3.75 Option: 2 4.75
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