Practice Molarity (m) (2.3.4) - Chapter 2: Solutions

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6 sample questions

Question 1.
What does molarity measure?
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Think about how we define concentrations in chemistry.
Question 2.
How is molarity calculated?
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Try recalling the formula we discussed.
3Question 3.
What is the definition of molarity?
- A measure of the mass of solute
- A measure of moles of solute per liter of solution
- A measure of temperature
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Focus on the moles and solution volume relationship.
4Question 4.
If a solution has 4 moles of solute in 2 liters, what is its molarity?
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Use the definition of molarity to solve.
Question 5.
How would you prepare 250 mL of a 1M hydrochloric acid solution starting from a concentrated stock solution with a molarity of 12M?
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Recall the dilution principles we learned.
Question 6.
A chemist needs a 0.5M KCl solution. How many grams of KCl are required to create 1 liter of this solution? (Molar mass of KCl = 74.55 g/mol)
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Use the relationship between moles, mass, and molarity.

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