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V mL of 2.2 M H2SO4 is mixed with 10V mL of water, and a volume contraction of 2% occurs on mixing. Calculate the molarity of the resulting diluted solution.

1. 0.204 M
2. 0.200 M
3. 0.220 M
4. 0.180 M

Correct answer: 0.204 M

Solution

Moles = 2.2*V; final volume after 2% contraction is 10.78V mL, giving M = 2.2V/10.78V approximately 0.204 M.

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