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← JEE Main 2022 · 25 Jun · Shift 1
ChemistryInteger+4 / -1Question 85 of 90

JEE Main 2022 · 25 Jun · Shift 1, Chemistry question 85

1 L aqueous solution of H2SO4\mathrm{H_2SO_4} contains 0.02 m mol H2SO4\mathrm{H_2SO_4}. 50% of this solution is diluted with deionized water to give 1 L solution (A). In solution (A), 0.01 m mol of H2SO4\mathrm{H_2SO_4} are added. Total m mols of H2SO4\mathrm{H_2SO_4} in the final solution is ______ ×103\times10^3 m mols.

Answer and worked solution

Official answer: 0

Amounts. Half the solution holds 0.01 mmol; adding 0.01 mmol gives 0.02 mmol.

In the requested unit. 0.020.02 mmol =2×10−5×103=2\times10^{-5}\times10^3 mmol, which is 0 to the nearest integer.

Answer: 0