Chem again...Not sure why i keep getting this wrong.

Question

What is the base-10 logarithm of the molar concentration of a salt, AX, with pKsp = 61.424?

Answer 1

if the pKsp = 61.424 , the the log K =  - 61.424

if the log = - 61.424 ,  then 10 to the -61.424 is 3.767 e-62

Ksp = 3.767e-62 = [A][X]

take the square root, to get [X]:

1.94 e-31 Molar

that's your answer: 1.94e-31 Molar,

because every mol/litre of AX that "dissolves" gives [X}