Chem Lab C

[Avogadro]

15g of CaCl2 is added to 100 mL of water. What is the resultant boiling point of the water? (assume standard conditions)

On wow, forgot this could be on here. Glad to see this before anything important.

Fortunately I still think I know the equation (Click to Show Hidden Text)

100.7 °C?

[kenniky]

15g of CaCl2 is added to 100 mL of water. What is the resultant boiling point of the water? (assume standard conditions)

On wow, forgot this could be on here. Glad to see this before anything important.

Fortunately I still think I know the equation (Click to Show Hidden Text)

100.7 °C?

Incorrect, check your equation again (I'm pretty sure I know where you went wrong)

[Piggy]

15g of CaCl2 is added to 100 mL of water. What is the resultant boiling point of the water? (assume standard conditions)

. (Click to Show Hidden Text)

102.1 °C?

[kenniky]

15g of CaCl2 is added to 100 mL of water. What is the resultant boiling point of the water? (assume standard conditions)

. (Click to Show Hidden Text)

102.1 °C?

correct, your turn

[Piggy]

An apparatus contains Br2(g) in a solution. What happens to the vapor pressure when the piston lowers and decreases the volume of Br2(g) above the solution by half? (Assume no temperature change).

[Avogadro]

An apparatus contains Br2(g) in a solution. What happens to the vapor pressure when the piston lowers and decreases the volume of Br2(g) above the solution by half? (Assume no temperature change).

Attempt (Click to Show Hidden Text)

I think it would double?

[Piggy]

An apparatus contains Br2(g) in a solution. What happens to the vapor pressure when the piston lowers and decreases the volume of Br2(g) above the solution by half? (Assume no temperature change).

Attempt (Click to Show Hidden Text)

I think it would double?

Incorrect.
Should I give the answer now or wait?

[Avogadro]

An apparatus contains Br2(g) in a solution. What happens to the vapor pressure when the piston lowers and decreases the volume of Br2(g) above the solution by half? (Assume no temperature change).

Attempt (Click to Show Hidden Text)

I think it would double?

Incorrect.
Should I give the answer now or wait?

Actually, I think I figured out my issue.

I think so at least (Click to Show Hidden Text)

If I'm correct, I didn't pay proper attention to the fact that it's vapor pressure as opposed to "normal pressure"- I believe that the vapor pressure would remain the same, as some of the gas would condense into liquid Br2.

[Piggy]

Attempt (Click to Show Hidden Text)

I think it would double?

Incorrect.
Should I give the answer now or wait?

Actually, I think I figured out my issue.

I think so at least (Click to Show Hidden Text)

If I'm correct, I didn't pay proper attention to the fact that it's vapor pressure as opposed to "normal pressure"- I believe that the vapor pressure would remain the same, as some of the gas would condense into liquid Br2.

Correct! Your turn.

[Avogadro]

According to the second law of thermodynamics, entropy must always increase. How is it, then, that it is possible for water to freeze and become ice? Justify your response using both an equation and a direct reference to the second law of thermodynamics.