A perfect gas is Heated at constant pressure so that it volume double. Find the final temperature of gas close to-
640K
610K
630K
620K
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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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