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Stoichiometry

Stoichiometry
The OH⁻ concentration in a solution having pH value 3 is

10-11
10-13
10-3
10-10

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Stoichiometry
At a temperature of 0°K, the molecules of a gas have only __________ energy.

None of these
Rotational
Translational
Vibrational

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Stoichiometry
A liquid is in equilibrium with its vapor at its boiling point. On an average, the molecules in the liquid and gaseous phases have equal

Potential energy
Total energy
Kinetic energy
Intermolecular forces of attraction

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Stoichiometry
The crystallisation of a solute from a solution may be done by

All of these
Changing the nature of the system by the addition of a more soluble material
Removal of pure solvent by evaporation
Change of temperature thereby causing supersaturation

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Stoichiometry
If the pH value of a solution changes by one unit, it implies that hydrogen ion concentration in the solution will change __________ times.

70
100
20
10

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Stoichiometry
Na₂SO₄. 10H₂O crystals are formed by cooling 100 Kg of 30% by weight aqueous solution of Na₂SO₄. The final concentration of the solute in the solution is 10%. The weight of crystals is

32.2
45.35
20
58.65

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