The pH of 10^{-8} M HCl solution is | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) $HCl$ is a strong acid. All acids have a $pH$ in the acidic range,i.e.,below $7$. The concentration of $HCl$ is given as $10^{-8} \ M$. $pH$ is ca

Vedclass · Accepted Answer

Between $6-7$

Vedclass · Answer

(D) $HCl$ is a strong acid. All acids have a $pH$ in the acidic range,i.e.,below $7$. The concentration of $HCl$ is given as $10^{-8} \ M$. $pH$ is calculated by considering the contribution of protons from both the acid and the water. Since $10^{-8} \ M$ is a very low concentration,the contribution of $H^+$ ions from the auto-ionization of water $(10^{-7} \ M)$ cannot be ignored. Total $[H^+] = [H^+]_{acid} + [H^+]_{water} = 10^{-8} + 10^{-7} = 1.1 	imes 10^{-7} \ M$. $pH = -\log[H^+] = -\log(1.1 	imes 10^{-7}) = 7 - \log(1.1) \approx 6.96$. This value lies between $6$ and $7$. Thus,the correct answer is option $(d)$.

The $pH$ of $10^{-8} \ M \ HCl$ solution is

Similar Questions

$4 \ g$ of $NaOH$ is added in water to form $500 \ mL$ solution at $298 \ K$. What is the $pH$ of the solution? (Molar mass of $NaOH = 40 \ g \ mol^{-1}$)

Which among the following has the highest $pH$?

Calculate the $pOH$ of a $0.01 \text{ M}$ monobasic acid solution that is completely dissociated at $298 \text{ K}$.

Which of the following solutions will have $pH$ close to $1.0$?

Following four solutions are prepared by mixing different volumes of $NaOH$ and $HCl$ of different concentrations. The $pH$ of which one of them will be equal to $1$?

Vedclass Test Series

Exam Paper Generator

Online Exam Module