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1. Intro to General Chemistry3h 48m
2. Atoms & Elements4h 16m
3. Chemical Reactions4h 10m
4. BONUS: Lab Techniques and Procedures1h 38m
5. BONUS: Mathematical Operations and Functions48m
6. Chemical Quantities & Aqueous Reactions3h 53m
7. Gases3h 49m
8. Thermochemistry2h 37m
9. Quantum Mechanics2h 58m
10. Periodic Properties of the Elements3h 9m
11. Bonding & Molecular Structure3h 29m
12. Molecular Shapes & Valence Bond Theory1h 57m
13. Liquids, Solids & Intermolecular Forces2h 23m
14. Solutions3h 1m
15. Chemical Kinetics2h 53m
16. Chemical Equilibrium2h 29m
17. Acid and Base Equilibrium5h 1m
18. Aqueous Equilibrium4h 47m
19. Chemical Thermodynamics1h 50m
20. Electrochemistry2h 42m
21. Nuclear Chemistry2h 36m
22. Organic Chemistry5h 7m
23. Chemistry of the Nonmetals2h 39m
24. Transition Metals and Coordination Compounds3h 16m

6. Chemical Quantities & Aqueous Reactions

Molarity

General Chemistry

6. Chemical Quantities & Aqueous Reactions

Molarity

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Multiple Choice

What is the molarity of a solution made by dissolving 3.68 g of sucrose (C12H22O11) in sufficient water to form 275.0 mL of solution? (Molar mass of sucrose = 342.30 g/mol)

0.0039 M

0.013 M

0.134 M

0.039 M

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Verified step by step guidance

First, calculate the number of moles of sucrose (C₁₂H₂₂O₁₁) using its mass and molar mass. Use the formula:

\frac{mass}{molar mass}

. Substitute the given values: mass = 3.68 g and molar mass = 342.30 g/mol.

Perform the division to find the moles of sucrose:

\frac{3.68}{342.30}

. This will give you the number of moles of sucrose present in the solution.

Next, convert the volume of the solution from milliliters to liters, as molarity is expressed in moles per liter. Use the conversion factor: 1 L = 1000 mL. Therefore,

\frac{275.0}{1000}

Now, calculate the molarity of the solution using the formula:

\frac{moles}{volume in liters}

. Substitute the moles of sucrose and the volume in liters into the formula.

Finally, perform the division to find the molarity of the solution. This will give you the concentration of sucrose in the solution in moles per liter (M).