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3 years ago

A solution of H2SO4 (90.08 g/mol) has 785.6 g of H2SO4 and 359 g of H2O. What is the molal concentration (molality)?

Chemistry

1 answer:

tekilochka [14]3 years ago

8 0

The molality of H₂SO₄ solution is 24.2 m.

Explanation:

We need to find the molality of sulfuric acid.

Mass of sulfuric acid = 785.6 g

Mass of water = 359 g

We have to find the moles of H₂SO₄ by using its mass and molar mass as,

Moles of H₂SO₄ = $$\frac{785.6g}{90.08 g/mol}$

= 8.7 moles

Mass of the solution in kg = $$\frac{359}{1000}$ = 0.359 kg

Molality = $$\frac{moles}{solvent (kg)}$

= $$\frac{8.7 mol }{0.359 kg}\\$

= 24.2 m

So molality of the H₂SO₄ solution is 24.2 m.

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For 1: The correct answer is Option C.

For 2: The correct answer is Option B.

For 3: The correct answer is Option C.

For 4: The correct answer is Option C.

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For 1:

As, there is no effect of volume on the equilibrium. So, the equilibrium constant remains the same.

Hence, the correct answer is Option C.

For 2:

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Hence, the correct answer is Option B.

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Hence, the correct answer is Option C.

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