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WorksheetsNaCl Dilution – Theory Only (MCQ)
Total questions: 10
Worksheet time: 5mins
What happens to the concentration of NaCl when water is added to the solution?
Increases
Decreases
Stays the same
Becomes saturated
What is the correct formula used for dilution calculations?
V₁ + V₂ = V₃
M₁V₁ = M₂V₂
n = C × V²
m = V/M
Which unit is typically used for concentration in dilution calculations?
g
mol
mol/L
mL
If the volume of a solution is doubled, what happens to the concentration?
Becomes zero
Becomes half
Doubles
Stays the same
Dilution is used to:
Increase the number of Na⁺ and Cl⁻ ions
Increase the temperature of a solution
Decrease the concentration of a solution
Crystallize the salt
The number of moles of NaCl after dilution is:
Increased
Decreased
Unchanged
Doubled
A 1 M NaCl solution diluted to 500 mL from 250 mL will result in:
0.5 M
1 M
2 M
0.25 M
Which of the following best defines dilution?
Adding salt to a solution
Removing salt from solution
Increasing volume to reduce concentration
Heating the solution
Which factor remains constant during a proper dilution?
Volume
Concentration
Number of moles of solute
Mass of solvent
Why do we perform dilution?
To change the chemical identity
To increase solubility
To adjust concentration for experiments
To evaporate water
