MHT CET Chemistry question
If 45 mL of a 0.2 M solution A is mixed with 60 mL of a 0.3 M solution B and there is no change in volume, the final molarity of the solution is
Answer: (D)
Solution
Total moles = 45×0.2 + 60×0.3 = 9 + 18 = 27 mmol in 105 mL, so molarity = 27/105 =
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