Pharma Scope
5. Which of the following modes of expressing concentration is independent of temperature Molality Formality Normality Molarity
Molality is independent of temperatuer
6. How many moles of NaCl are contained in 100.0 mL of a 0.200 M solution?
2
.02
.002
.0002
2
.02
.002
.0002
7. The density of a 2.03 M solution of Acetic acid is water is 1.017 g/mL. The molality of the solution is
1.52 m
2.5 m
2.27 m
2 m
1.52 m
2.5 m
2.27 m
2 m
8. we mix three solution of same solute of Molarity 1M, 2M ,3M and Volume 1 L,2L ,3L. Find the molarity of the resultant solution
Molarity of the resulting solution is given by
3.3 M
2.33 M
3 M
1 M
Molarity of the resulting solution is given by
3.3 M
2.33 M
3 M
1 M
9. What will be the molarity of a solution, which contains 5.85 g of NaCl per 500ml?
.5 M
.4 M
.2 M
1 M
.5 M
.4 M
.2 M
1 M
10. Molarity of Solution having 5 moles of solutes present in 2 L of solution is
2 M
2.5 M
.5 M
4 M
2 M
2.5 M
.5 M
4 M
11. The molality of the solution which contains 10 g of Cane sugar(
C
12
H
22
O
11
) dissolved in 150 g of water?
1.1 moles/kg
.194 moles/kg
.5 moles/kg
.22 moles/kg
C
12
H
22
O
11
) dissolved in 150 g of water?
1.1 moles/kg
.194 moles/kg
.5 moles/kg
.22 moles/kg
12. If 100 ml of 1.0 M NaOH solution is diluted to 1 L, the resulting solution contains
.1 Mole of NaOH
10 mole of NaOH
.05 Mole of NaOH
1 Mole of NaOH
.1 Mole of NaOH
10 mole of NaOH
.05 Mole of NaOH
1 Mole of NaOH
find the molarity of the solution where mole fraction of solute is 0.5 and H2SO4(98) and Molar mass of solvent isH2O (18 g/M) and density of solution is 1.769 g/ml
12.24
11.13
10.1
15.24
12.24
11.13
10.1
15.24
14. A Molal solution is one that contains one mole of solute in
22.4 L of solution
1 L of solvent
1000 g of solvent
1 L of solution
22.4 L of solution
1 L of solvent
1000 g of solvent
1 L of solution
Pharma Scope
14. A Molal solution is one that contains one mole of solute in 22.4 L of solution 1 L of solvent 1000 g of solvent 1 L of solution
تعريف المولالية هي عدد المولات في 1kg بما انو 1kg=1000g فيكون الاختيار 1000g