49. One litre of N2 HCl solution was heated in a beaker. When the volume was reduced to 600 mL, 9.125 g of HCI was lost out, the new normality of solution is 1) = 0.04 2) = 0.8 3) = 0.4 4) -0.2
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Answer:N=0.685
Explanation:
The original of 0.5N HCl solution of 1 litre had 18.225 gm of HCl
Initially 18.225gm of HCl was dissolved in 1 liter of silution
After heating , mass of HCl dissolved in the reduced 600mL of solution was found to be (18.225−3.25)gm=14.975 gm
Hence
Normality of new solution=
Volume of solution in litre
Equivalent weight of HCl mass
N=
1000mL per litre
600mL
Equivalent weight of HCl
14.497
N=
0.6 litre
36.45
14.497
N=
0.6 litre
0.3977 Meq
N=0.685
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