If NaCl is doped with `10^-3 mol` % of `SrCl_2`, what is the concentration of cation vacancies?

2 mol ethanol is dissolved in 3 mol water. Calculate the mole fraction of water in the solution.

The rate of a reaction is 1.2xx10^-3 L mol^-1 s^-1 . What is the order of the reaction?

The solubility product of salt AB is 1 xx 10^(-8) In a solution in which concertration of A is 10^(-3) M . The AB will precipitate when the concentration of B becomes.

Consider a certain reaction A rarr Products with k = 2.0x10^-2 s^-1.Calculate the concentration of A after 100s if the initial concentration of A is 1.0 mol L^-1.

For a reaction R rarr P the rate becomes 2 times when the concentration of the reactant A is 4 times. What is the order of the reaction.

Represent the cell with cell reaction- Zn(s)+2Ag^+(aq) rarr Zn^(2+) (aq)+2Ag(s) Calculate the emf of the cell at 298K if the molar concentraction of Ag^+ and Zn^(2+) ions in the half cwells are 0.10 mol dm^(-3) and 0.01 mol dm^(-3) respectively. Given that E^@ Ag^+//Ag= 0.80V and E^@Zn^(2+)//Zn=-0.76V,

In the reaction A + 2B rarr 3C + 2D , the rate of diappearance of B is 1xx10^-2 mol L^-1s^-1 . What will be the rate of the reaction and rate of change of concentration of A and C?

The value of rate constant is 1x10^-2 mol^-1 LS^-1. What is the order of the reaction? How will the catalyst effect the value of K?