Q.
The normality of a solution that results from mixing 4g of NaOH,500mL of 1MHCl, and 10.0mL2 of H2O4 (specific gravity 1.1,49%H2SO4 by weight) is
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Some Basic Concepts of Chemistry
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Solution:
4g of NaOH=4/40=0.1mole=100mmol≡ 100mEq HCl=500×1=500mEq N of H2SO4=Ew2×Vsol (inmL)W2×1000
or =Ew2% by weight ×10×d =4949×10×1.1=11N
mEq of H2SO4=11N×10.00mL=110mEq
Total acid =100+500=610mEq NaOH=100mEq
Acid left =610−100=510mEq
Total volume =1000mL
Normality of solution =mLmEq=1000510=0.51N