Which conditions apply at ph = 7.0? [h+] > [oh–]; the solution is acidic [h+] < [oh–]; the solution is basic [h+] = [oh–] = 0m [h+] = [oh–] = 1 × 10–7m?

Answer : The correct answer is " [H⁺] = [OH⁻] = 1 x 10⁻⁷ M

When pH is 7 , the solution is neutral means neither acidic nor basic.

So , [h+] > [oh–]; the solution is acidic and [h+] < [oh–] the solution is basic options cancels out .

If concentration of H+ and OH- is checked :

Step 1 : To find concentration of H+ using pH formula

the formula of pH = - log [H⁺]

Where ,[H+] = concentration of Hydrogen ions.

Given : pH = 7

Plugging values of pH in formula

7 = -log [H⁺]

To remove log ,antilog of 7 is taken

10⁻⁷ = [H⁺]

[H⁺] = 1 x 10⁻⁷ M

Step 2 :Concentration of OH⁻ =>

The relation between pH and pOH => pH + pOH = 14

pOH = 14-pH = 14 -7 = 7

pOH = 7

Relation between pOH and [OH⁻] is => pOH = -log [OH⁻]

Plugging value of pOH in formula

7 = -log [OH⁻]

[OH⁻] = 10⁻⁷ = 1 x 10⁻⁷ M

Hence concentration of [OH⁻ ]and [H⁺ ] = 1 x 10⁻⁷ M

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