Solutions (Grades 11-12)
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Solutions
1.
In which of the solvents below would hydrogen chloride dissociate nearly to completion?
- Water
- Glacial acetic acid
- Ethylene diamine
- Aniline
2.
Which of the following non-aqueous solvents is amphiprotic?
- Benzene
- Chloroform
- Pyridine
- Methanol
3.
In which of the following solvents is the acidic property of the solute enhanced?
- Ammonia
- Water
- Methanol
- Formic acid
4.
A solution is a mixture of two or more pure and chemically non-reactive substances, whose composition can be varied within certain limits.
5.
Which of the following solvents is aprotic?
- Water
- Methanol
- Ethanol
- Chloroform
6.
Which of the following units is associated with solubility?
- g solvent
- g solute
- g solute/100 g of water
- mol/L
7.
Which of the following descriptions correctly defines the dielectric constant?
- How well a solute can store electrical charge, in comparison to how well water can store electrical charge
- How well a solute can store electrical charge relative to the ability of free space to store electrical charge
- How well two electrons can retain their electrical charge
- Both (a) and (c)
8.
For the following reaction:
HA [math]hArr[/math] [math]H^+ + A^-[/math]
Which of the following represents a correct general equation for the acid dissociation constant?
HA [math]hArr[/math] [math]H^+ + A^-[/math]
Which of the following represents a correct general equation for the acid dissociation constant?
- [math]K_a = [H^+]/[HA][/math]
- [math]K_a = [A^-]/[HA][/math]
- [math]K_a = [H^+][/math]
- [math]K_a = {[H^+][A^-]}/{[HA]}[/math]
9.
When an ionic compound dissolves, it exists in a solution as .
10.
All organic solvents, including methanol, can dissolve methane.
- True
- False
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