the equation for the ph of a substance is ph = -logh⁺, where h⁺ is the concentration of hydrogen ions. what…

the equation for the ph of a substance is ph = -logh⁺, where h⁺ is the concentration of hydrogen ions. what is the approximate ph of a solution if the concentration of hydrogen ions is 5.0 × 10⁻⁴ moles per liter?\n2.7\n3.0\n3.3\n3.6\ndone

the equation for the ph of a substance is ph = -logh⁺, where h⁺ is the concentration of hydrogen ions. what is the approximate ph of a solution if the concentration of hydrogen ions is 5.0 × 10⁻⁴ moles per liter?\n2.7\n3.0\n3.3\n3.6\ndone

Answer

Explanation:

Step1: Substitute the given value.

Given $[H^+]=5.0\times 10^{-4}$, and the formula $pH = -\log[H^+]$. So $pH=-\log(5.0\times 10^{-4})$.

Step2: Use logarithm properties.

By the property of logarithms $\log(ab)=\log a+\log b$, we have $pH=-(\log 5.0+\log(10^{-4}))$. Since $\log(10^{-4})=- 4$ and $\log 5.0\approx0.7$, then $pH=- (0.7 - 4)$.

Step3: Simplify the expression.

$pH=-0.7 + 4=3.3$.

Answer:

3.3