Question

Rearrange the following equation and solve for x when the hydrogen ion concentration is 0.001 M.

Answer 1

Answer : The correct option is, x = 10

Explanation : Given,

Concentration of $H^+$ ion = 0.001 M

pH : It is defined as the negative logarithm of hydrogen ion or hydronium ion concentration.

First we have to calculate the pH.

$pH=-\log [H^+]$

$pH=-\log (0.001)$

$pH=3$

Now we have to calculate we the value of 'x'.

The given expression is:

$pH=2+\log x$

Now put the value of pH in this expression, we get:

$3=2+\log x$

$3-2=\log x$

$1=\log x$

$x=10$

Therefore, the value of 'x' is 10.