11.8k views
3 votes
Rearrange the following equation and solve for x when the hydrogen ion concentration is 0.001 M.

pH= 2 + log x

(Recall that pH=−log[H+].)

Answer choices: x= 10, x= 0.20, x= 3

User Yunus Kula
by
7.2k points

1 Answer

6 votes

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.

User Igor Nikiforov
by
6.2k points