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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

Respuesta :

Answer : The correct option is, x = 10

Explanation : Given,

Concentration of [tex]H^+[/tex] 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.

[tex]pH=-\log [H^+][/tex]

[tex]pH=-\log (0.001)[/tex]

[tex]pH=3[/tex]

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

The given expression is:

[tex]pH=2+\log x[/tex]

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

[tex]3=2+\log x[/tex]

[tex]3-2=\log x[/tex]

[tex]1=\log x[/tex]

[tex]x=10[/tex]

Therefore, the value of 'x' is 10.