Stoichiometry MCQs

A sample of well water contains 140 gm/m³ Ca²⁺ ions and 345 gm/m³ Na⁺ ions. The hardness of the sample of water, expressed in terms of equivalent CaCO₃ in gm/m³ is (assuming atomic masses of Ca : 40, Na : 23, C : 12, O : 16)

Volume occupied by one gm mole of a gas at S.T.P. is

Which of the following ratios defines the recycle ratio in a chemical process?

One kg of saturated steam at 100°C and 1.01325 bar is contained in a rigid walled vessel. It lias a volume of 1.673 m³. It cools to 98°C; the saturation pressure is 0.943 bar; one kg of water vapour under these conditions has a volume of 1.789 m³. The latent heat of condensation (kJ/kg^-1) under these conditions is

'Giga' stands for

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

An ideal gas can be liquified, because

Kinetic theory of gases stipulates that, the

If the partial pressure of the solvent in the vapor phase is equal to the vapor pressure of the solvent at that temperature, then the system is said to be at its