Stoichiometry
Assuming applicability of ideal gas law, the pure component volume of the vapor in a saturated gas can be calculated from theoretical relationship. The volumetric composition of a vapor saturated gas is independent of the

Total pressure
Nature of the gas
Nature of the liquid
Temperature of the liquid

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Stoichiometry
The heat capacity of a substance is

Equal for solid and liquid states below melting point
Lower for liquid state than for gaseous state
Higher for solid state than for liquid state
Greater for liquid state than for solid state

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Stoichiometry
Heat of neutralisation of a strong acid and strong base is always a constant value, i.e., 57 KJ/Kg mole. This is because

The salt formed does not hydrolyse
Only OH⁻ and H⁺ ions react in every case
The strong base and strong acid reacts completely
The strong base and strong acid reacts in aqueous solution

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