2L of 0.2 M H2SO4 is reacted with 2L of 0.1 M NaOH solution, the molarity of the resulting product Na2SO4 in the solution is ________ millimolar. (Nearest integer).

H2SO4 + 2NaOH →Na2SO4 + 2H2O0.4 mol 0.2 mol -0.3 mol - 0.1 mol Molarity of Na2SO4 is 0.14= 0.025 M= 25 mM.

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2L of 0.2 M H₂SO₄ is reacted with 2L of 0.1 M NaOH solution, the molarity of the resulting product Na₂SO₄ in the solution is ________ millimolar.
(Nearest integer).

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answer is 25.

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Detailed Solution

H₂SO4 + 2NaOH $\to$ Na₂SO₄ + 2H₂O

0.4 mol 0.2 mol -

0.3 mol - 0.1 mol

Molarity of Na₂SO₄ is $\frac{0.1}{4}$ = 0.025 M

= 25 mM.

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