408,927 views
40 votes
40 votes
It takes 83mL of a 0.45M NaOH solution to neutralize 235mL of an HCl solution.

What is the concentration of HCl solution?

User Aaron Gillion
by
2.9k points

1 Answer

12 votes
12 votes

Answer:


image

Step-by-step explanation:

Hello there!

In this case, according to the reaction between hydrochloric acid and sodium hydroxide:


image

Whereas the 1:1 mole ratio of the acid to base allows us to write:


image

At the equivalence point (complete neutralization); it is possible for us to write it in terms of molarities and volumes as follows:


image

In such a way, we solve for the molarity of the HCl to obtain:


image

Best regards!

User Dominic Price
by
3.0k points