A ten fold increase in the [H+] of a solution

Question

A ten fold increase in the [H+] of a solution (A) increases its pH by one unit (B) decreases its pH by one unit (C) increases its pH by 10 unit (D) decreases its pH by 10 unt

Tardigrade Admin · Accepted Answer

pH1 = - log[H1+] pH2 = - log[10H1+] = - log [H+] - log 10 = - log [H+] - 1 = pH1 - 1

Q. A ten fold increase in the $[H^{+}]$ of a solution

increases its $p H$ by one unit

decreases its $p H$ by one unit

increases its $p H$ by $10$ unit

decreases its $p H$ by $10$ unt

$p H_{1} = - l o g [H_{1}^{+}]$
$p H_{2} = - l o g [10 H_{1}^{+}]$
$= - l o g [H^{+}] - l o g 10$
$= - l o g [H^{+}] - 1$
$= p H_{1} - 1$

Q. A ten fold increase in the [H+] of a solution

increases its pH by one unit

decreases its pH by one unit

increases its pH by 10 unit

decreases its pH by 10 unt