Question

If it requires 35.0 milliliters of 0.50 molar NaOH to neutralize 25.0 milliliters of HCl, what is the concentration of the HCl solution?

Balanced equation: NaOH + HCl yields NaCl + H2O

Answer 1

Step 1
Molarity = mole/ volume
volume in L
so for NaOH
find mole
you have volume and molarity so u can find it by using formula written above

Step 2
you got moles of NaOH
now use ratio
or just this formula
\[\frac{ mole ~of~NaOH}{ coefficient~of~NaOH }=\frac{ mole~ of~ HCl }{ coefficient~of~HCl }\]
u know mole of NaOH and you know coefficients from balanced reaction
thus find mole of HCl

Step3
you have now mole of HCl and volume
so use
molarity= mole/volume
and get final concentration
thats it
(sorry need to leave so wrote everything in one go)

Answer 2

hope its clear :)

Answer 3

Thank you, I'm going to try to figure it out now.

Answer 4

:) if anything is not clear just write
i'll clear it once im back :)

Answer 5

okay thanks :)

Answer 6

I got 0.70?