An acid-base indicator has a K_(a) of 3.0 xx 10^(-5) . The acid form of the indicator is red and the basic form is blue. (a) By how much must the pH change in order to change the indicator from 75% red to 75% blue?
An acid-base indicator which is a weak acid has a pK_(In) value =5.45. At what concentration ratio of sodium acetate to acctic acid would the indicator show a colour half-way between those of its acid and conjugate base forms ? [pK_(a) of acetic acid =4.75, log 2=0.3]
Write the following in the usual form: 10 xx 5 + 6 .
Two solution has ph values of 5 and 8 respectively. which solution will be basic in nature.
The acid dissociation constant of uric acid is K_(a)=4.0xx10^(-6) M. The pH of a sample of urine is 6.0. What is the ratio of concentration of urate ion to uric acid in the urine?
A certain weak acid has K_(a)=10^(-5). If the equilibrium constant for it reaction with a strong base is represented as 1xx10^(y) then find the value of y.
If ph value of a solution is more than7, then what does it indicate?
If ph value of solution is less than 7, then what does it indicate?
NARENDRA AWASTHI-IONIC EEQUILIBRIUM-Assertin-Reason Type Questions
