Which of the following is not a series
1+1/2+1/4+1/8+1/16+............
1-1/3-1/9-1/27-1/181-.......
1,-1/3,1/9,-1/27,1/54,....
(1) and (2) both
(3) is not a series, it is a sequence.
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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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