Table of contents

1. The Chemical World9m
- The Scientific Method
  9m
2. Measurement and Problem Solving2h 19m
3. Matter and Energy2h 15m
4. Atoms and Elements2h 33m
5. Molecules and Compounds1h 50m
6. Chemical Composition1h 23m
7. Chemical Reactions1h 43m
8. Quantities in Chemical Reactions1h 8m
9. Electrons in Atoms and the Periodic Table2h 32m
10. Chemical Bonding2h 10m
11 Gases2h 7m
12. Liquids, Solids, and Intermolecular Forces1h 11m
13. Solutions3h 1m
14. Acids and Bases2h 14m
15. Chemical Equilibrium1h 27m
16. Oxidation and Reduction1h 33m
17. Radioactivity and Nuclear Chemistry53m

13. Solutions

Solubility and Intermolecular Forces

Introduction to Chemistry

13. Solutions

Solubility and Intermolecular Forces

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Multiple Choice

Which of the following statements is/are true?
a) Methane will dissolve completely in acetone, CH₃COCH_3.
b) Hydrofluoric acid (HF) will form a heterogeneous mixture with tetrachloride, CCl₄.
c) Pentane will form a homogeneous mixture with CBr₄.
d) Methanethiol (CH₃SH) is miscible in fluoromethane (CH₃F).

B & C

C & D

B,C, & D

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Verified step by step guidance

Step 1: Understand the concept of solubility and miscibility. Solubility refers to the ability of a substance to dissolve in a solvent, forming a homogeneous mixture. Miscibility is a specific type of solubility where two liquids can mix in any proportion without separating.

Step 2: Analyze statement (a). Methane is a non-polar molecule, while acetone is a polar solvent. Generally, 'like dissolves like,' meaning polar solvents dissolve polar solutes, and non-polar solvents dissolve non-polar solutes. Therefore, methane is unlikely to dissolve completely in acetone.

Step 3: Evaluate statement (b). Hydrofluoric acid (HF) is polar, while carbon tetrachloride (CCl4) is non-polar. Due to their differing polarities, HF and CCl4 will not mix well, forming a heterogeneous mixture.

Step 4: Consider statement (c). Pentane and carbon tetrabromide (CBr4) are both non-polar substances. Non-polar substances tend to mix well with each other, forming a homogeneous mixture.

Step 5: Assess statement (d). Methanethiol (CH3SH) and fluoromethane (CH3F) are both polar molecules. Polar molecules are generally miscible with each other, so CH3SH is likely to be miscible in CH3F.