Mole ConceptHard
Question
The density of 3M sodium thiosulphate is 1.25 g/ml. Identify the correct statements among the following :
Options
A.% by weight of sodium thisoulphate is 37.92
B.The mole fraction of sodium thisoulphate is 0.065
C.The molarity of Na+ is 2.53 and S2O32- is 1.25
D.All of these
Solution
(A) and (B) Explanation :
M =
[M. Wt. of Na2S2O3 = 46 + 64 + 48 = 158]
3 =
% by wt. =
= 37.92 (A) is correct.
m =
= 3.86
xB =
= 0.065 (B) is correct.
M =
[M. Wt. of Na2S2O3 = 46 + 64 + 48 = 158] 3 =
% by wt. =
= 37.92 (A) is correct.m =
= 3.86 xB =
= 0.065 (B) is correct.Create a free account to view solution
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