00. Methods of Expressing Concentration of Solutions
SOLUTIONS

277051 A current strength of $9.65 \mathrm{~A}$ is passed through excess fused $\mathrm{AlCl}_{3}$ for $5 \mathrm{~h}$. How many litres of chlorine will be liberated at STP? $(\mathrm{F}=\mathbf{9 6 5 0 0}$ C)

1 2.016
2 1.008
3 11.2
4 20.16
5 10.08
SOLUTIONS

277054 4L of $0.02 \mathrm{M}$ aqueous solution of $\mathrm{NaCl}$ was diluted by adding $1 \mathrm{~L}$ of water. The molality of the resultant solution is

1 0.004
2 0.008
3 0.012
4 0.016
SOLUTIONS

277057 The molarity of a solution obtained by mixing $750 \mathrm{~mL}$ of $0.5 \mathrm{M}$ HCI with $250 \mathrm{~mL}$ of $2 \mathrm{M}$ HCI will be

1 $0.875 \mathrm{M}$
2 $1.00 \mathrm{M}$
3 $1.75 \mathrm{M}$
4 $0.0975 \mathrm{M}$
SOLUTIONS

277078 Normality of $0.25 \mathrm{M}$ phosphorous acid $\mathrm{H}_{3} \mathrm{PO}_{3}$ is

1 $0.125 \mathrm{~N}$
2 $0.75 \mathrm{~N}$
3 $0.50 \mathrm{~N}$
4 $0.25 \mathrm{~N}$
SOLUTIONS

277079 What is the concentration of a solution prepared by dissolving $4.20 \mathrm{~g}$ of $\mathrm{NaF}$ in $500 \mathrm{~g}$ of water?

1 0.00840 Molal
2 0.00840 Molar
3 0.200 Molar
4 0.200 Molal
SOLUTIONS

277051 A current strength of $9.65 \mathrm{~A}$ is passed through excess fused $\mathrm{AlCl}_{3}$ for $5 \mathrm{~h}$. How many litres of chlorine will be liberated at STP? $(\mathrm{F}=\mathbf{9 6 5 0 0}$ C)

1 2.016
2 1.008
3 11.2
4 20.16
5 10.08
SOLUTIONS

277054 4L of $0.02 \mathrm{M}$ aqueous solution of $\mathrm{NaCl}$ was diluted by adding $1 \mathrm{~L}$ of water. The molality of the resultant solution is

1 0.004
2 0.008
3 0.012
4 0.016
SOLUTIONS

277057 The molarity of a solution obtained by mixing $750 \mathrm{~mL}$ of $0.5 \mathrm{M}$ HCI with $250 \mathrm{~mL}$ of $2 \mathrm{M}$ HCI will be

1 $0.875 \mathrm{M}$
2 $1.00 \mathrm{M}$
3 $1.75 \mathrm{M}$
4 $0.0975 \mathrm{M}$
SOLUTIONS

277078 Normality of $0.25 \mathrm{M}$ phosphorous acid $\mathrm{H}_{3} \mathrm{PO}_{3}$ is

1 $0.125 \mathrm{~N}$
2 $0.75 \mathrm{~N}$
3 $0.50 \mathrm{~N}$
4 $0.25 \mathrm{~N}$
SOLUTIONS

277079 What is the concentration of a solution prepared by dissolving $4.20 \mathrm{~g}$ of $\mathrm{NaF}$ in $500 \mathrm{~g}$ of water?

1 0.00840 Molal
2 0.00840 Molar
3 0.200 Molar
4 0.200 Molal
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SOLUTIONS

277051 A current strength of $9.65 \mathrm{~A}$ is passed through excess fused $\mathrm{AlCl}_{3}$ for $5 \mathrm{~h}$. How many litres of chlorine will be liberated at STP? $(\mathrm{F}=\mathbf{9 6 5 0 0}$ C)

1 2.016
2 1.008
3 11.2
4 20.16
5 10.08
SOLUTIONS

277054 4L of $0.02 \mathrm{M}$ aqueous solution of $\mathrm{NaCl}$ was diluted by adding $1 \mathrm{~L}$ of water. The molality of the resultant solution is

1 0.004
2 0.008
3 0.012
4 0.016
SOLUTIONS

277057 The molarity of a solution obtained by mixing $750 \mathrm{~mL}$ of $0.5 \mathrm{M}$ HCI with $250 \mathrm{~mL}$ of $2 \mathrm{M}$ HCI will be

1 $0.875 \mathrm{M}$
2 $1.00 \mathrm{M}$
3 $1.75 \mathrm{M}$
4 $0.0975 \mathrm{M}$
SOLUTIONS

277078 Normality of $0.25 \mathrm{M}$ phosphorous acid $\mathrm{H}_{3} \mathrm{PO}_{3}$ is

1 $0.125 \mathrm{~N}$
2 $0.75 \mathrm{~N}$
3 $0.50 \mathrm{~N}$
4 $0.25 \mathrm{~N}$
SOLUTIONS

277079 What is the concentration of a solution prepared by dissolving $4.20 \mathrm{~g}$ of $\mathrm{NaF}$ in $500 \mathrm{~g}$ of water?

1 0.00840 Molal
2 0.00840 Molar
3 0.200 Molar
4 0.200 Molal
SOLUTIONS

277051 A current strength of $9.65 \mathrm{~A}$ is passed through excess fused $\mathrm{AlCl}_{3}$ for $5 \mathrm{~h}$. How many litres of chlorine will be liberated at STP? $(\mathrm{F}=\mathbf{9 6 5 0 0}$ C)

1 2.016
2 1.008
3 11.2
4 20.16
5 10.08
SOLUTIONS

277054 4L of $0.02 \mathrm{M}$ aqueous solution of $\mathrm{NaCl}$ was diluted by adding $1 \mathrm{~L}$ of water. The molality of the resultant solution is

1 0.004
2 0.008
3 0.012
4 0.016
SOLUTIONS

277057 The molarity of a solution obtained by mixing $750 \mathrm{~mL}$ of $0.5 \mathrm{M}$ HCI with $250 \mathrm{~mL}$ of $2 \mathrm{M}$ HCI will be

1 $0.875 \mathrm{M}$
2 $1.00 \mathrm{M}$
3 $1.75 \mathrm{M}$
4 $0.0975 \mathrm{M}$
SOLUTIONS

277078 Normality of $0.25 \mathrm{M}$ phosphorous acid $\mathrm{H}_{3} \mathrm{PO}_{3}$ is

1 $0.125 \mathrm{~N}$
2 $0.75 \mathrm{~N}$
3 $0.50 \mathrm{~N}$
4 $0.25 \mathrm{~N}$
SOLUTIONS

277079 What is the concentration of a solution prepared by dissolving $4.20 \mathrm{~g}$ of $\mathrm{NaF}$ in $500 \mathrm{~g}$ of water?

1 0.00840 Molal
2 0.00840 Molar
3 0.200 Molar
4 0.200 Molal
SOLUTIONS

277051 A current strength of $9.65 \mathrm{~A}$ is passed through excess fused $\mathrm{AlCl}_{3}$ for $5 \mathrm{~h}$. How many litres of chlorine will be liberated at STP? $(\mathrm{F}=\mathbf{9 6 5 0 0}$ C)

1 2.016
2 1.008
3 11.2
4 20.16
5 10.08
SOLUTIONS

277054 4L of $0.02 \mathrm{M}$ aqueous solution of $\mathrm{NaCl}$ was diluted by adding $1 \mathrm{~L}$ of water. The molality of the resultant solution is

1 0.004
2 0.008
3 0.012
4 0.016
SOLUTIONS

277057 The molarity of a solution obtained by mixing $750 \mathrm{~mL}$ of $0.5 \mathrm{M}$ HCI with $250 \mathrm{~mL}$ of $2 \mathrm{M}$ HCI will be

1 $0.875 \mathrm{M}$
2 $1.00 \mathrm{M}$
3 $1.75 \mathrm{M}$
4 $0.0975 \mathrm{M}$
SOLUTIONS

277078 Normality of $0.25 \mathrm{M}$ phosphorous acid $\mathrm{H}_{3} \mathrm{PO}_{3}$ is

1 $0.125 \mathrm{~N}$
2 $0.75 \mathrm{~N}$
3 $0.50 \mathrm{~N}$
4 $0.25 \mathrm{~N}$
SOLUTIONS

277079 What is the concentration of a solution prepared by dissolving $4.20 \mathrm{~g}$ of $\mathrm{NaF}$ in $500 \mathrm{~g}$ of water?

1 0.00840 Molal
2 0.00840 Molar
3 0.200 Molar
4 0.200 Molal