Question

K (14) Which of the following would decrease the K,, for Pblz? PbI, 2 pb? +27 adding a solution of Pb(NO3)2 K) adding a solution of KI L) adding more Pb12(S) Manone of the above - K, of a compound is constant at constant temperature

the answer is M but I dont know why??

Answer 1

Hi,

Hope you are doing well.

___________________________________________________________________________

Solubility product constant, $K_{sp}$ is a constant for a solid substance which can dissolve in a solution. This value is a constant at a particular temperature. In short $K_{sp}$value can represent the level at which a solid can dissolve in a solution. This value will not be affected by addition of other substances.

For a general dissolution, at equilibrium,

$aA_{(s)}\rightleftharpoons bB_{(aq)}+cC_{(aq)}$

For this reaction, $K_{sp}$value is given by,

$K_{sp}=[B]^{b}.[C]^{c}=constant$

Hence the correct option is OPTION (M) none of the above- K_sp of a compound is constant at constant temperature.

__________________________________________________________________________

Hope this helped for your studies. Keep learning. Have a good day.

Feel free to clear any doubts at the comment section.

Please don't forget to give a thumps up.

Thank you. :)