Question

Determine the volume of 0.230 M KOH solution required to neutralize each sample of sulfuric acid. The neutralization reaction is:

Determine the volume of 0.230 M KOH solution required to neutralize each sample of sulfuric acid. The neutralization reaction is: 

H2SO4(aq)+2KOH(aq)→ K2SO4(aq)+2H2O(l)


Part A

25 mL of 0.230 M H2SO4. Express your answer using two significant figures.


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Answer #1

We have this balanced equation here,

H2SO4 + 2KOH = K2SO4 + 2H2O

SO, we need 2 mole of KOH to neutralize 1 mole of H2SO4.

Simple solution we have,

(M1 × V1 )/ N1 =( M2 × V2) / N2

where,

M1 = molarity of H2SO4 = 0.230M

V1 = Volume of H2SO4 = 25 ml

N1 = no. Of mole of H2SO4 = 1

M2 = molarity of KOH = 0.230 M

V2 = volume of KOH = (?)

N2 = no. Of mole of KOH = 2

So,

(0.230 × 25)/1 = ( 0.230 × V2)/ 2

5.75 = V2 × 0.115

V2 = 50 ml.

we require 50 ml of 0.230 m KOH to neutralize 25 ml of 0.230 m H2SO4.

Here, notice that we need double volume of KOH.why?

because 2 mole of KOH only neutralize one mole of H2SO4.

And concentration are also same so we require 50 ml (25×2) i.e, double volume.

PLEASE GIVE A THUMBS UP IF IT REALLY HELPS YOU.

THANK YOU.

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