Question

The concentration of hydrogen ion in a sample of soft drink is 3·8 × 10^-3 M. What is its pH value?

Solution

We know,

pH space equals space minus log space open square brackets straight H to the power of plus close square brackets space space space space equals space minus log space open square brackets 3.8 space cross times space 10 to the power of negative 3 end exponent close square brackets space space space space equals space minus open square brackets log space 3.8 space plus space log space 10 to the power of negative 3 end exponent close square brackets space space space space equals space minus open square brackets 0.58 minus 3 close square brackets space space space space space equals space 2.42

Since pH of the soft drink is 2.42, therefore, it is acidic.

Some More Questions From Equilibrium Chapter

For Daily Free Study Material Join wiredfaculty