Question: If 10 grams of NaCl is dissolved in 500 mL of water, what is the concentration in grams per liter? (2022)
Options:
10 g/L
20 g/L
5 g/L
15 g/L
Correct Answer: 10 g/L
Exam Year: 2022
Solution:
Concentration = mass/volume = 10 g / 0.5 L = 20 g/L.
If 10 grams of NaCl is dissolved in 500 mL of water, what is the concentration i
Practice Questions
Q1
If 10 grams of NaCl is dissolved in 500 mL of water, what is the concentration in grams per liter? (2022)
10 g/L
20 g/L
5 g/L
15 g/L
Questions & Step-by-Step Solutions
If 10 grams of NaCl is dissolved in 500 mL of water, what is the concentration in grams per liter? (2022)
Step 1: Identify the mass of NaCl. In this case, it is 10 grams.
Step 2: Identify the volume of water in liters. 500 mL is equal to 0.5 liters (since 1000 mL = 1 L).
Step 3: Use the formula for concentration, which is concentration = mass / volume.
Step 4: Plug in the values: concentration = 10 grams / 0.5 liters.
Step 5: Calculate the concentration: 10 grams divided by 0.5 liters equals 20 grams per liter.
Concentration Calculation – This question tests the ability to calculate the concentration of a solution using the formula concentration = mass/volume.
Unit Conversion – It requires understanding the conversion between grams and liters, ensuring the volume is expressed in liters for the calculation.
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