Question

ph measures the acidity of a substance, and is described by the equation ph = - log (h+), where h+ is the concentration of hydrogen ions. a substance has an h+ concentration of 1×10^(-7). find its ph, then determine if it is basic, neutral, or acidic. the table below characterizes the acidity of a substance based on its ph. ph<7 acidic, ph = 7 neutral, ph>7 basic, ph acidity. the substance is

Explanation:

Step1: Apply pH formula

The formula for pH is $pH = -\log(H^{+})$. Given $H^{+}=1\times10^{-7}$. Substitute into the formula: $pH = -\log(1\times10^{-7})$.

Step2: Calculate the logarithm

We know that $\log(1\times10^{-7})=- 7$ (since $\log(a\times10^{n})=n$ when $a = 1$ in base - 10 logarithm). So, $pH=-(-7)=7$.

Step3: Determine the nature of the substance

According to the table, when $pH = 7$, the substance is neutral.

Answer:

$pH = 7$
The substance is neutral.