What is the molarity of an HCl solution if 25.0 mL of a 0.13 M NaOH solution are needed to neutralize 30.0 mL of the sample?

1 Answer
Dylan K.
Dec 4, 2017

0.11 M

Explanation:

Balanced reaction:

#HCl + NaOH ⇌ H_2O + NaCl#

By titration:

#0.025# #L# of #0.13# #(mol)/L# #NaOH = 0.00325# #mol# #NaOH#

#0.00325# #mol# #NaOH# #*# #1# #mol# #HCl## /1# #mol# #NaOH# =

#0.00325# #mol# #HCl#

Now,

#0.00325# #mol# #HCl# #/# #0.030# L =#0.0108M# #HCl#

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