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Laws of Definite Proportions, Multiple Proportions

Percentage of...

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Percentage of weight by volume of 0.6 M AgNO3(aq) (molar mass of AgNO3 = 170 g/mol) is

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Q. 100 g of a sample of common salt containing contamination of

N H_{4} C l

(Molar mass = 53.5 g/mol) and

M g C l_{2}

(Molar mass = 95 g/mol) to the extent of 2% each by mass is dissolved in water. Which of the following is/are correct when volume of 5% by mass of

A g N O_{3}

(Molar mass = 170 g/mol) solution (d = 1.04

{g/cm}^{3})

is required to precipitate all chloride ions?

Q. 100 g of a sample of common salt containing contamination of

N H_{4} C l

(Molar mass = 53.5 g/mol) and

M g C l_{2}

(Molar mass = 95 g/mol) to the extent of 2% each by mass is dissolved in water. Which of the following is/are correct when volume of 5% by mass of

A g N O_{3}

(Molar mass = 170 g/mol) solution (d = 1.04

{g/cm}^{3})

is required to precipitate all chloride ions?

A g C l

obtained by the reaction of

169.8 g

A g N O_{3}

29.2 g

N a C l

according to following equation is

27.2 g

A g N O_{3} + N a C l \to A g C l + N a N O_{3} (not balanced)

Calculate the percentage yield.

(

A g N O_{3}

169.8 g / m o l

, molar mass of

N a C l

58.4 g / m o l

and molar mass of

A g C l

143.3 g / m o l)

A g C l

obtained by the reaction of

169.8 g

A g N O_{3}

29.2 g

N a C l

according to following equation is

27.2 g

A g N O_{3} + N a C l \to A g C l + N a N O_{3} (not balanced)

Calculate the percentage yield.

(

A g N O_{3}

169.8 g / m o l

, molar mass of

N a C l

58.4 g / m o l

and molar mass of

A g C l

143.3 g / m o l)

Q. What weight of AgCl will be precipitated when a solution containing 4.77 g of NaCl is added to a solution of 5.77 g of

A g N O_{3}

?
(Molar mass of Na = 23 g/mol, Cl = 35.5 g/mol, Ag = 108 g/mol)

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