The reaction : X `harr` 2Y goes to `50%` completion. If the initial concentration of X be 0.5mol in 0.5 liter the ratio of the active masses of Y and X at equilibrium is :

In a reaction, 2x rarr y ,the concentration of x decreases from 3.0M to 1.5M in 4min .The rate of the reaction is

In a reaction 2X to Y , the concentration of X decreases from 3.0 mole/litre to 2.0 moles/litre in 5 minutes. The rate of reaction is

For the reaction N_2 + 2O_2 hArr 2NO_2 the equilibrium concentrations in a 1.5L reaction vessel are 5.0 mol of N_2 , 7.0 mol of O_2 , and 0.10 mol of NO_2 Calculate equilibrium constant.

For a reversible reaction: X+2Y rarr 2Z , the equilibrium concentrations of X, Y and Z are 0.32, 0.40 and 0.35 moles L^(-1) respectively at 25^(@)C . a. If unitially the system contained only X and Y and then reached the state of equilibrium, what were the initial concentrations of X and Y . b. If at the start only X and Z were present, what were the initial concentrations?

A first order reaction is 50% completed in 20 minutes at 27^(@)C and in 5 min at 47^(@)C . The energy of activation of the reaction is

If 40% of x is equal to 50% of y, then find the ratio of x and y.