of 25 Map pling Learning Two samples of sodium chloride were 1.70 g of sodium an
ID: 576959 • Letter: O
Question
of 25 Map pling Learning Two samples of sodium chloride were 1.70 g of sodium and 2.62 g of chlorine. Which of the following could be the results of the decomposition of the other sample, being consistent with the law of constant composition (also called the law of definite proportions or law of definite composition)? sed into their constituent elements. One sample produced O 5.35 g of sodium and 1.43 g of chlorine O 5.35 g of sodium and 8.24 g of chlorine O 5.35 g of sodium and 12.8 g of chlorine O 5.35 g of sodium and 2.68 g of chlorine Hin Previous Check Answer NextExtExplanation / Answer
Solution ;-
No of moles of Na = 1.70/23 = 0.0739mole
no of moles of Cl = 2.62/35.5 = 0.0738 mole
so that, the other sample must have 1:1 ration of Na,Cl.
No of moles of Na = 4.83/23 = 0.23 mole
No of moles of Cl = 0.232 mole
mass of Cl = 0.232*35.5 = 8.24 grams
answer : 5.35g of Na , 7.24grams of Cl
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