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?\no 2.7\no 3.0\no 3.3\no 3.6\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?\no 2.7\no 3.0\no 3.3\no 3.6\ndone

Answer

Explanation:

Step1: Substitute the value of [H+]

Given [H+] = 5.0×10⁻⁴, and pH = -log[H+]. So, pH = -log(5.0×10⁻⁴).

Step2: Use logarithm properties

We know that log(ab)=log(a)+log(b). So, log(5.0×10⁻⁴)=log(5.0)+log(10⁻⁴). Since log(10⁻⁴)= - 4 and log(5.0)≈0.7. Then log(5.0×10⁻⁴)≈0.7 - 4=-3.3.

Step3: Calculate pH

pH = -log(5.0×10⁻⁴). Substituting the value of log(5.0×10⁻⁴) we found, pH = -(-3.3)=3.3.

Answer:

3.3