Question

Question 5a

1. Oxygen gas dissolves in lake water. (This is how fish get the oxygen they need to survive.) What happens to the solubility of oxygen gas when it is cold outside? Why does this happen?

   Chose from the options below. More than one answer could be correct.

   	1.	The solubility does not change.
   	2.	The solubility increases.
   	3.	The solubility decreases.
   	4.	In general, the solubility of gas solutes in liquid solvents increases as temperature decreases.
   	5.	In general, the solubility of gas solutes in liquid solvents decreases as temperature decreases.
   	6.	In general, the solubility of gas solutes in liquid solvents increases as the pressure of the gas above the liquid increases.
   	7.	In general, the solubility of gas solutes in liquid solvents increases as the pressure of the gas above the liquid decreases.
   	8.	In general, the solubility of solid solutes in liquid solvents increases as the temperature increases.
   	9.	In general, the solubility of solid solutes in liquid solvents increases as the temperature decreases.

0.8 points

Question 5b

1. Why does your pop lose it's fizz over time after the pop bottle (or can) has been opened?

   Chose from the options below. More than one answer could be correct.

   	1.	The solubility does not change.
   	2.	The solubility increases.
   	3.	The solubility decreases.
   	4.	In general, the solubility of gas solutes in liquid solvents increases as temperature decreases.
   	5.	In general, the solubility of gas solutes in liquid solvents decreases as temperature decreases.
   	6.	In general, the solubility of gas solutes in liquid solvents increases as the gas pressure above the liquid increases.
   	7.	In general, the solubility of gas solutes in liquid solvents decreases as the gas pressure above the liquid increases.
   	8.	In general, the solubility of solid solutes in liquid solvents increases as temperature increases.
   	9.	In general, the solubility of solid solutes in liquid solvents increases as temperature decreases.

Answer 1

Solution:

Question 5a

Oxygen gases can dissolve in water but it is depend on on the interaction between the molecules of the gas and the water molecules. The amount of gas that can be dissolved in water depends on the temperature of the water. More gas can dissolve in cold water than in hot water.

Correct answers

2. The solubilty increase

4. In general, the solubility of gas solutes in liquid solvents increases as temperature decreases.

6. in general, the solubility of gas solutes in liquid solvents increases as the pressure of the gas above the liquid increases.

Question 5b

Pop lose it's fizz over time after the pop bottle get opened: Soda water, like other carbonated beverages, contains carbon dioxide that has dissolved under pressure. When the pressure is released by opening the soda container, the liquid cannot hold as much carbon dioxide, so the excess bubbles out of the solution. If the soda is left open, additional carbon dioxide will slowly escape into the air. Under warm conditions, the carbon dioxide leaves the solution faster.

Correct options

3. The solubility decreases.

4. In general, the solubility of gas solutes in liquid solvents increases as temperature decreases.

6. In general, the solubility of gas solutes in liquid solvents increases as the gas pressure above the liquid increases.

9. In general, the solubility of solid solutes in liquid solvents increases as temperature decreases.

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