Chemical Engineering - Stoichiometry

The density of a gas 'X' is twice that of another gas 'Y'. If the molecular weight of gas 'Y' is 'M'; then the molecular weight of the gas 'X' will be

The equilibrium data of component A in the two phases B and C are given below.

The estimate of Y for X = 4 by fitting a quadratic expression of a form Y = mX² for the above data is

Saturated solution of benzene in water is in equilibrium with a mixture of air and vapours of benzene and water at room temperature and pressure. Mole fraction of benzene in liquid is x_B and the vapour pressures of benzene and water at these conditions are p_v^B and p_v^w respectively. The partial pressure of benzene in air-vapour mixture is

pH value of a solution containing equal concentration of hydroxyl and hydrogen ions will be

The percentage ratio of the partial pressure of the vapor to the vapor pressure of the liquid at the existing temperature is