Mole ConceptHard
Question
The strength of 10-2 M Na2CO3 solution in terms of molality will be (density of solution = 1.10 g mL-1). (Molecular weight of Na2CO3 = 106 g mol-1)
Options
A.9.00 × 10-3
B.1.5 × 10-2
C.5.1 × 10-3
D.11.2 × 10-3
Solution
(A) Explanation : m = 
where ′m′ is molality, M is molarity.
= 9.00 × 10-3
[Take 1099.4 = 1100]
where ′m′ is molality, M is molarity.= 9.00 × 10-3 [Take 1099.4 = 1100]
Create a free account to view solution
View Solution FreeMore Mole Concept Questions
At 373 K and 1 atm, if the density of liquid water is 1.0 g/ml and that of water vapour is 0.0006 g/ml, then the volume ...A quantity of 27.6 g of K2CO3 was treated by a series of reagent so as to convert all of its carbon to K2Zn3[Fe(CN)6]2. ...When burnt in air, a 12.0 g mixture of carbon and sulphur yields a mixture of CO2 and SO2, in which the number of moles ...To what extent must a given solution of concentration of 40 mg silver nitrate per ml be diluted to yield a solution of c...A gaseous mixture contains 40% H2 and 60% He by volume. What is the total number of moles of gases present in 10 g of su...