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Question

# 100 mL of a 1 M H2SO4 solution is mixed with 200 mL of a 0.5 M HCl solution and diluted to a final volume of 500 mL. 200 mL of this solution is further diluted with 300 ml of water. Find the normality of H+ ions in the final solution.

A
0.51 N
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B
0.32 N
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C
0.24 N
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D
0.16 N
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Solution

## The correct option is C 0.24 NMilliequivalents of HCl =200×0.5=100 Milliequivalents of H+= 100 Milliequivalents of H2SO4=100×2×1=200 Milliequivalents of H+= 200 Total volume = 500 mL Normality of H+ =300500=0.6 N Now, 200 mL of this solution is diluted to 500 mL by adding 300 mL water. N1V1=N2V2 0.6×200=N2×500 On solving, N2=0.24 N

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