The K, of an indicator HIn is 9 x 10^(4), The percentage of the basic form of indicator is 10x in a solution of pH = 4. What is x ?

The K, of an indicator HIn is 9 x 10^(4), The percentage of the basic

1.	The K, of an indicator HIn is 9 x 10^(4), The percentage of the basic form of indicator is 10x in a solution of pH = 4. What is x ?
Answer» SOLUTION :` PH =pK_(In)+LOG"" (In^(-))/( HI_n) , 4 =4- log 9 +log ""(In^(-))/(HI_n)` ` 9= ( In^(-))/( HI_n) RARR % " of " In^(-)=90 %`