If `K_(a)` of `HCN =4xx10^(-10)` , then the pH of `2.4 xx 10^(-1)` molar HCN(aq) is

If K_a of HCN = 4xx10^-10 , then the pH of 2.5xx10^-1 molar HCN (aq) is

The K_a of hydrocyanic acid , HCN, is 5.0xx10^(-10) .What is the pH of 0.050 M HCN(aq)?

Calculate pH and degree of hydrolysis fo 10^(-2)MNH_(4)CN solution. Given that K_(a) of HCN=5xx10^(-10) and K_(b) of (aq. NH_(3))=2xx10^(-5) at 25^(@)C .

The K_(a) value for HCN is 10^(-9) . What is the pH of 0.5 M HCN solution ?

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