More concentration/dilution worksheet
Concentration
1. Calculate the following concentrations in g/L
a) 15 g of NaNO3 in 750 mL of solution
b) 25 g of LiOH in 3.5 L of solution
c) 50 % m/V of AgNO3
d) 6 g of HF in 250 mL of solution
2. Marco has three solutions of potassium chloride. Which solution has the highest
concentration?
Solution 1: 8 g in 0.35 L
Solution 2: 2 g in 540 mL
Solution 3: 279.75 g in 14 L
3. The following three solutions show different concentrations of calcium chloride (CaCl2)
in water. Which solution has the highest concentration?
Solution 1: 0.2 kg in 0.8 L
Solution 2: 185 g in300 mL
Solution 3: 75 g in 0.25 L
4. Katia has a variety of different drinks. Calculate the sugar concentration of each drink
and rank them from lowest to highest.
Bubbly: 25 g in 1.2 L
Fizzy pop: 10 % m/V
Hummingbird soda: 10 g in 250 mL
Red eye cola: 1.5 g in 0.1 L
5. Convert 5.3 % m/V into g/ml and g/L.
Changes in Concentration - Dilution
1. I have a 0.53 mL solution of salt water with a concentration of 12 g/L. I add 8 g of salt.
What is the new concentration?
2. I have an 0.6 L solution of sugar water with a concentration of 0.36 g/mL. I add 240 mL
of water. What is the new concentration?
3. Solution A: 30mL of salt water with concentration 4.70 g/L.
Solution B: 20mL of salt water with concentration 42.8g/L.
If I mix the two solutions, what will be the new concentration?
4. Solution A: 5400 mL of salt water with concentration 87 g/L.
Solution B: 1.84 L of distilled water.
If I mix the two solutions, what will be the new concentration?
5. I have a 900 mL solution of sulfuric acid with a concentration of 140 g/L. I want to dilute
it to get a solution with a concentration of 35 g/L. How much water do I need to add?
6. I have a 0.75 L solution of sulfuric acid with a concentration of 14 g/L. I want to dilute it
to get a solution with a concentration of 5.6 g/L. How much water do I need to add?