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
View Solution FreeMore Mole Concept Questions
A quantity of 1 kg of 2 m urea solution is mixed with 2 kg of 4 m urea solution. The molality of the resulting solution ...Law of multiple proportions is not applicable for the oxide(s) of...The mass composition of universe may be given as 90% H2 and 10% He. The average molecular mass of universe should be...Mole fraction of the Toluene in the vapour phase in equilibrium with a solution of benzene (Po = 120 Torr) and toluene (...Some bottles of colourless liquids were being labelled when the technicians accidentally mixed them up and lost track of...