
How do you calculate the pH of HCl?
Answer
482.7k+ views
2 likes
Hint:. First we should know about the concentration of HCl solution or the molarity of the solution, then by applying the pH formula as , we can easily find the pH of the solution. Now solve it.
Complete step by step answer:
- First of all, let’s discuss what is pH. pH gives us the measure of acid/base strength of any solution. pH scale ranges from 0-14, 7 is neutral, below 7 it represents acidic nature i.e. the compound is acidic and above 7 it represents basic nature i.e. the compound is basic.
- HCl stands for hydrochloric acid and it is a very strong acid. So, from this we come to know that its pH should fall in the range between .
Now, considering the statement:
- First, of all we should know about the molarity of the solution i.e. the concentration of HCl in and then we can easily calculate the pH of HCl solution by using the pH formula as;
-----------(1)
i.e. pH is the negative logarithm of hydrogen ion.
- Here, represents the concentration of the hydrogen ion in the solution and the concentration of both the acid i.e. HCl and hydrogen ions i.e. in the solution is the same. It is so because, HCl is a very strong acid and dissociates completely into the hydrogen ions and chloride ions as;
- Now, if suppose that the molarity of solution is
Then, the pH of the HCl solution is as;
Using equation (1), we get:
Thus, in this way we can find the pH of the HCl solution.
Note: Molarity may be defined as the no. of moles of the solute to the total volume of the solution in liters or of the solution. it is represented by the symbol as M.
Complete step by step answer:
- First of all, let’s discuss what is pH. pH gives us the measure of acid/base strength of any solution. pH scale ranges from 0-14, 7 is neutral, below 7 it represents acidic nature i.e. the compound is acidic and above 7 it represents basic nature i.e. the compound is basic.
- HCl stands for hydrochloric acid and it is a very strong acid. So, from this we come to know that its pH should fall in the range between
Now, considering the statement:
- First, of all we should know about the molarity of the solution i.e. the concentration of HCl in
i.e. pH is the negative logarithm of hydrogen ion.
- Here,
- Now, if suppose that the molarity of solution is
Then, the pH of the HCl solution is as;
Using equation (1), we get:
Thus, in this way we can find the pH of the HCl solution.
Note: Molarity may be defined as the no. of moles of the solute to the total volume of the solution in liters or
Latest Vedantu courses for you
Grade 11 Science PCM | CBSE | SCHOOL | English
CBSE (2025-26)
School Full course for CBSE students
₹41,848 per year
Recently Updated Pages
Master Class 11 Accountancy: Engaging Questions & Answers for Success

Master Class 11 Social Science: Engaging Questions & Answers for Success

Master Class 11 Economics: Engaging Questions & Answers for Success

Master Class 11 Physics: Engaging Questions & Answers for Success

Master Class 11 Biology: Engaging Questions & Answers for Success

Class 11 Question and Answer - Your Ultimate Solutions Guide

Trending doubts
1 ton equals to A 100 kg B 1000 kg C 10 kg D 10000 class 11 physics CBSE

One Metric ton is equal to kg A 10000 B 1000 C 100 class 11 physics CBSE

How much is 23 kg in pounds class 11 chemistry CBSE

Difference Between Prokaryotic Cells and Eukaryotic Cells

Which one is a true fish A Jellyfish B Starfish C Dogfish class 11 biology CBSE

What is the technique used to separate the components class 11 chemistry CBSE
