Solubility of Gases and Solids, Henry's Law

Question 1

Generally, solids get ___ _____ in water as you raise the temperature.

Answer 1

more soluble (they dissolve more)

Question 2

Generally, gases get____ _____ in water as the temperature rises

Answer 2

less soluble

Question 3

temperature and solubility of solids is directly or indirectly related?

Answer 3

directly. As temp rises so does solubility

Question 4

temperature and solubility of gases is directly or indirectly related?

Answer 4

indirectly. As temp rises,solubility decreases

Question 5

Why does gas become less soluble as temperature increases?

Answer 5

Gas molecules will move FASTER as temperature rises. When a gas is dissolved in liquid, raising the temp increases the gas molecules speed, which causes more and more gas molecules to escape/leave the liquid

Question 6

Why is soda served cold and in pressured cans?

Answer 6

Bc more gas dissolves in liquid at low temp and more gas is disolved with more pressure. So more carbon dioxide can dissolve in a cold pressurized drink, giving it more fizz.

Question 7

Pressure and solubility of gases is directly or indirectly related?

Answer 7

Directly. increased pressure = increased solubility

Question 8

Henry’s Law

Answer 8

Pa=k*{A}
Pa=gas’ pressure in the solution
k= gas’ concentration in moles per liter (Molarity)
{A}= constant that differs for each gas, solvent, temp

Question 9

Instead of remembering Henry’s Law, just remember that if you increase/decrease pressure of a gas solution, you must also increase/decrease __________ by the same factor

Answer 9

concentration of gas molecuels