A solution contains `0.1MH_(2)` and 0.3MHCl. Calculate the concentration of `S^(2)` and HS- ions in the solution. For `H_(2)S, K_(a_(1))=1.05xx10^(-7)` and `K_(a_(2))=1.3xx10^(-14)`.

What is the pH of a 0.05 M solution of formic acid? (K_(a)=1.8xx10^(-4))

Calculate the H^(+) ion concentration in 0.05M formic acid at 298K. (K_(a)=1.8xx10^(-4) for HCOOH).

The pH of 0.10 M NH_(3) solution (K_(b)=1.8xx10^(-5)) is :

A solution contains 0.01 M metal ion ( Zn^(2+) and Cu^(2+) ). It is saturated by passing H_(2)S gas in the M. The solubility products of ZnS and CuS are 3.0xx10^(-22) and 8.0xx10^(-36) respectively. Which of the following will occur ?

Calculate the wavelength associated with a proton moving at 1.0xx10^(3)m//s . (Mass of proton =1.67xx10^(-27)kg and h=6.63xx10^(-34) Js)

The pH of 2.5xx10^(-1) M HCN solution (K_(a)=4xx10^(-10)) is :

The following concentration were obtained for the formation of NH_3 from N_2 and H_2 at quilibrium at 500 k. It (N_2(g)=1.5xx10^-2M,(H_2(g)=3.0xx10^-2M and (NH_3(g)=1.2xx10^-2M .Calculate equilbrium constant