Multiple Choice
If 0.50 mol of NaCl is added to enough water to make 1.0 L of solution, what is the molarity of the resulting NaCl solution?
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6. Chemical Quantities & Aqueous Reactions
Molarity
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
In general chemistry, what are the units of molarity ()?
A
(moles of solute per kilogram of solvent)
B
(moles of solute per liter of solution)
C
(grams of solute per liter of solution)
D
(milliliters per mole)
Verified step by step guidance1
Understand that molarity (M) is defined as the number of moles of solute dissolved in one liter of solution.
Recall the formula for molarity: \(M = \frac{\text{moles of solute}}{\text{liters of solution}}\).
Note that the numerator is in moles (mol), which measures the amount of substance.
Note that the denominator is in liters (L), which measures the total volume of the solution, not just the solvent.
Recognize that molality, a different concentration unit, uses moles of solute per kilogram of solvent, but molarity specifically uses liters of solution as the volume unit.
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