# Calculating amount of H2SO4 needed for dilution

## Homework Statement

How much 4.00M of HCl is required to make 100ml of 0.400M HCl?

M1V1 = M2V2

## The Attempt at a Solution

Its (4.00M)*(xL) = (0.400M)(0.100L)
I think its 0.005L but the possible answer (multiple choice) say otherwise...

I just need confirmation if i did it right or i messed up on something

Thanks

Ygggdrasil
Gold Member
Its (4.00M)*(xL) = (0.400M)(0.100L)
This equation is setup correctly.

I think its 0.005L but the possible answer (multiple choice) say otherwise...
But the number you get is incorrect. Try re-doing the calculation.

epenguin
Homework Helper
Gold Member
They ask you how much of a solution is required to make (100 ml of) a solution a tenth as concentrated and you need a formula?

The question should say How much 4.00M of HCl is required to make 100ml of 0.200M HCl?

Oops typo, I meant to say (4.00M)*(xL) = (0.200M)*(0.100L)

but the multiple options are 0.000125L, 1250ml, 125 ml, 50,000ml

naturally, i'd want to pick the smallest value which is 0.000125L, but its not what i got

Borek
Mentor
Must be a mistake in the test (assuming you finally listed the problem and answers right).

Bystander