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Two acid solutions A and B are titrated separately each with 25 mL of 1NNa_(2)CO_(3) solution. The volume of each acid used for titration is 10 mL and 40 mL respectively for the complete neutralization. The volume ratio ofv_(B)and v_(A)which is mixed to prepare one mL 1N solution is…… |
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Answer» `N_(A) xx V_(A) = N_(Na_(2)CO_(3)) xx V_(Na_(2)CO_(3)) , N_(A) xx 10 = = 1 xx 25 rArr N_(A) = 2.5` Similarly `N_(B) xx V_(B) = N_(Na_(2)CO_(3)) xx V_(Na_(2)CO_(3)) , N_(B) xx 40 = 1 xx 25 , N_(B) = (5)/(8) N` `N_(A) Y_(A) + N_(B)V_(B) = 1 xx 1, (2.5 xx V_(A)) + (5)/(8) xx V_(B) = 1, V_(A) + V_(B) = 1, V_(A) = 1- V_(B)` So `2.5(1-V_(B)) + (5)/(8)V_(B) = 1, 2.5 - 2.5 V_(B) + 0.625 V_(B) = 1` `rArr 1.5 = 1.875 V_(B) rArr 0.8 = V_(B) , V_(A) = 0.2` , So `(V_(B))/(V_(A)) = 4` |
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