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WorksheetsExperience 4 Concentrations Solutions
Total questions: 10
Worksheet time: 8mins
Which is the correct equation to calculate the number of moles of solute.
number of moles = concentration x 1000
number of moles = volume / concentration
number of moles = concentration / volume
number of moles = concentration x volume
28g of CaCl2 was dissolved in 0.4 litres of water.
Calculate the concentration of the solution with the correct units.
0.625 g
6.25 mol / L
70 g/L
70 dm3
A student is preparing two solutions, A and B to use in an experiment.
To make solution A he dissolved 40.0g of a substance in 500 cm3 of a solvent.
Calculate the concentration of solution A.
0.08 g/L
8 g/L
0.8 g/L
80 g/L
1 dm3 is equal to which.
100 cm3
1 L
1000 g
10 cm3
Scientists use what to make up solutions of a particular concentration.
Concentration Flask
Aqueous Flask
Volumetric Flask
Deionised Flask
How do you decrease the concentration of a solution. Choose 2 options
add more solvent
add more solute
remove solute
add more water
What term do we use to describe a less concentrated solution?
Dilute
Volume
Aqueous
Solvent
Which of the solutions above is the most dilute
A
C
E
They are all the same concentration
Calculate the molarity of a solution made by dissolving: 10.6 g silver nitrate in water and making the volume up to 250 mL in a volumetric flask.
170 g/mol
0.0624 mol
2.49 mol /L
0.249 mol/L
Calculate the molarity of a solution made by dissolving: 34.8 g potassium sulfate in water and making the volume up to 100 mL in a volumetric
flask.
0.348 mol / L
348 mol / L
2.45 mol/L
2.00 mol / L
