Question

a solution with a ph of 4 has how many times hydronium (h+) ions as a solution with ph 5? 1/10 100 10 2

Explanation:

Step1: Recall pH formula

The formula for pH is $pH = -\log_{10}[H^+]$, so we can find $[H^+]$ as $[H^+]=10^{-pH}$.

Step2: Calculate $[H^+]$ for pH=4

For a solution with pH = 4, $[H^+]_1 = 10^{-4}$.

Step3: Calculate $[H^+]$ for pH=5

For a solution with pH = 5, $[H^+]_2 = 10^{-5}$.

Step4: Find the ratio of $[H^+]_1$ to $[H^+]_2$

The ratio $\frac{[H^+]_1}{[H^+]_2}=\frac{10^{-4}}{10^{-5}}$. Using the rule of exponents $\frac{a^m}{a^n}=a^{m - n}$, we get $10^{-4-(-5)} = 10^{1}=10$.

Answer:

10 (corresponding to the option "10")