Stoichiometry MCQs

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

The accumulation in a steady state combustion process, burning 1 kg mole of carbon with 1 kg mole of oxygen thereby producing 1 kg mole of carbon dioxide, is __________ kg mole.

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 heat of vaporisation __________ with increase in pressure.

The depression in freezing point of a solution is

A gas at 0°C was subjected to constant pressure cooling until its volume became half the original volume. The temperature of the gas at this stage will be

The atomic weight of helium is 4 times that of hydrogen. Its diffusion rate as compared to hydrogen will be __________ times.

Saturated molal absolute humidity of the vapor-gas mixture depends upon the

The vapor pressures of benzene and toluene are 3 and $$\frac{4}{3}$$ atmospheres respectively. A liquid feed of 0.4 moles of benzene and 0.6 moles of toluene is vapourised. Assuming that the products are in equilibrium, the vapor phase mole fraction of benzene is