In the expansion of , the sum of the coefficient of the terms is
80
16
32
64
Sum of the coefficients = (1+1)5 = 25 = 32.
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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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