37. The strength of (10power-2)M Na2CO3 solution in term of molality will be (density of solution = 1.1 g/ml) (Molar mass of Na2CO3 = 106 g/mol)

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Q. The strength of a

10^{- 2} M N a_{2} C O_{3}

solution in terms of its molality will be:

(density of solution = 1.10 {g mL}^{- 1}

molecular weight of N a_{2} C O_{3} = 106 {g mol}^{- 1})

Q. 250 mL of a sodium carbonate solution contains 2.65 g of

N a_{2} C O_{3}

. If 10 mL of this solution is diluted to 1 L, what is the concentration of the resultant solution?
(Molar mass of

N a_{2} C O_{3}

= 106 g/mol)

Q. The strength of a

10^{- 2} M N a_{2} C O_{3}

solution in terms of its molality will be:

(density of solution = 1.10 {g mL}^{- 1}

molecular weight of N a_{2} C O_{3} = 106 {g mol}^{- 1})

A solution of glucose (molar mass = 180 g/mol) in water is labelled as 10% (by mass). what would be the molality and molarity of the solution?
(density of solution = 1.2 g/mL)

Q. 21.2 g of sodium carbonate

(N a_{2} C O_{3})

is dissolved in enough water to make 250 mL of a solution. If it dissociates completely, the molar concentration of sodium ions

(N a^{+})

and the carbonate ions

(C O_{3}^{2 -})

are respectively:
(Molar mass of

N a_{2} C O_{3}

= 106

g m o l^{- 1}

)

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