Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the molarity of a solution with 2 moles of solute in 1 dm³ of solution?
💡 Hint: Use the formula M = n/V.
Question 2
Easy
How many grams of NaCl are needed to prepare 1 liter of a 1 M solution?
💡 Hint: Remember the relationship of moles and grams.
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Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is molarity defined as?
- A measure of pressure in a liquid.
- A measure of concentration in moles per liter.
- A measurement of temperature.
- A measure of mass.
- correct_answer:
💡 Hint: Recall the definition given earlier.
Question 2
Dilution affects the concentration of a solution.
- True
- False
💡 Hint: Consider how adding more solvent changes concentration.
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Challenge Problems
Push your limits with challenges.
Question 1
You have a 0.25 M NaOH solution. How many grams of NaOH do you need to prepare 3 L?
💡 Hint: Find moles first: 0.25 moles x 3 L = 0.75 moles. Convert using molar mass: 0.75 moles x 40 g/mol.
Question 2
Calculate the concentration in ppm if 2 mg of a pollutant is found in 100 L of water.
💡 Hint: Apply the conversion: 2 mg / 100L = (2 mg / 0.1 kg) x 1,000,000.
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