Chemistry question, Please help :)


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a student titrates 10.00 mL of 0.200 M KOH using a buret of HNO3. If the initial reading on the buret is 14.35 mL and the final reading is 29.86 mL, what is the concentration of the HNO3? Show the balanced chemical equation

Nov 21st, 2017

When situation is complete, M1 x V1 = M2 x V2 where M and V are Molarity and Volume.

Volume of HNO3 used = 29.86 - 14.35 = 15.51 ml

So 0.200 x 10.00 = M2 x 15.51

Therefore M2 = (0.200 x 10.00)/ ( 15.51)

                 M2 = 0.129

Answer Conc. Of HNO3 = 0.129 M


Balanced equation:   KOH + HNO3.  ------>.   KNO3 + H2O

Apr 9th, 2015

I have answered your question.

Niru

Apr 9th, 2015

thank you so much :D 

Apr 9th, 2015

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