calculate the mass of Na2CO3 required to prepare 250 ml of 0.5N solution
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Normality=Mass÷Equivalent mass×1000÷Volume of solution
Equivalent mass of Na2CO3
=Molar mass÷2=106÷2=53 g equiv^-1
Now, Mass of Na2CO3
=Normality×Equivalent mass×Volume of solutio÷1000
or, Mass of Na2CO3=0.5×53×250÷1000
=6.625 g
Normality=Mass÷Equivalent mass×1000÷Volume of solution
Equivalent mass of Na2CO3
=Molar mass÷2=106÷2=53 g equiv^-1
Now, Mass of Na2CO3
=Normality×Equivalent mass×Volume of solutio÷1000
or, Mass of Na2CO3=0.5×53×250÷1000
=6.625 g
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