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Question

The Molarity of 200ml of HCl solution which can neutralise 1.6g of anhydrous Na2CO3 is:

A
1M
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B
0.1M
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C
0.6M
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D
0.75M
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Solution

The correct option is C 0.1M
2HCl+Na2CO32NaCl+H2CO3
N1V1=N2V2
M×200=1.06106×1000×2
M1=10.6106=0.1M
M1V=WGEW×1000
Given question 1.6g of Na2CO3 should be replaced by 1.06g then weg at M=0.1M.

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