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- 1. Multiple ChoiceWhat is molality?no of mole of solute in 1 liter of solutionno of mole of solute in 1 kg of solvent
- 2. Multiple ChoiceTotal number of mol fraction for all component in the solution is equal to1.00.950.502.0
- 3. Multiple ChoiceCalculate mol fraction of H2O in 1.33 molal NaOH solution.0.560.760.980.84
- 4. Multiple Choice
What is the molarity of 4.0 g of NaCl (Molar mass=58.45) in 3800 mL of solution?
0.018 M
0.001M
1.052 M
0.062 M
- 5. Multiple Choice
Calculate the mole fraction of benzene (C6H6) in a solution of 46.8 g benzene and 36.8 g of toluene (C7H8). [Molar mass benzene = 78; Molar mass toluene = 92]
0.4
0.6
0.7
0.5
- 6. Multiple ChoiceWhat is the concentration of NaOH in a solution made by mixing 25.0 mL of 0.1 M NaOH with 100 mL of 0.2 M NaOH?0.18 M12.5 M1.25 M0.125 M
- 7. Multiple Choice
The molarity of a solution prepared by dissolving 45.0 g of glucose (C6H12O6) in 71.0 mL of water is
[Molar mass glucose = 180]
0.0352 M
3.52 M
0.352 M
35.2 M
- 8. Multiple ChoiceHow many grams of chloride ions are there in 100 mL of 1.90 M aqueous solution of sodium chloride?13.5 g6.74 g0.67 g1.35 g
- 9. Multiple Choice50.0 mL of phosphoric acid is titrated with 25.0 mL 0.1 M sodium hydroxide solution. The reaction is as follows :
H3PO4 + 3NaOH → Na3PO4 + 3H2O
Calculate the molarity of H3PO4 acid.0.017 M0.67 M1.5 M6.0 M - 10. Multiple ChoiceHow much water need to prepare 200 mL of 0.1 M NaCl from 2.0 M NaCl solution?10 mL200 mL190 mL50 mL
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