kenniky wrote: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.
100.7 °C?
Re: Chem Lab C
Posted: February 8th, 2017, 4:15 pm
by kenniky
Avogadro wrote:
kenniky wrote: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.
100.7 °C?
Incorrect, check your equation again (I'm pretty sure I know where you went wrong)
Re: Chem Lab C
Posted: February 9th, 2017, 1:16 pm
by Piggy
kenniky wrote:15g of CaCl2 is added to 100 mL of water. What is the resultant boiling point of the water? (assume standard conditions)
102.1 °C?
Re: Chem Lab C
Posted: February 9th, 2017, 1:30 pm
by kenniky
Piggy wrote:
kenniky wrote:15g of CaCl2 is added to 100 mL of water. What is the resultant boiling point of the water? (assume standard conditions)
102.1 °C?
correct, your turn
Re: Chem Lab C
Posted: February 9th, 2017, 4:32 pm
by 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).
Re: Chem Lab C
Posted: February 10th, 2017, 2:21 pm
by Avogadro
Piggy wrote: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).
I think it would double?
Re: Chem Lab C
Posted: February 10th, 2017, 4:25 pm
by Piggy
Avogadro wrote:
Piggy wrote: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).
I think it would double?
Incorrect.
Should I give the answer now or wait?
Re: Chem Lab C
Posted: February 10th, 2017, 4:48 pm
by Avogadro
Piggy wrote:
Avogadro wrote:
Piggy wrote: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).
I think it would double?
Incorrect.
Should I give the answer now or wait?
Actually, I think I figured out my issue.
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.
Re: Chem Lab C
Posted: February 10th, 2017, 5:12 pm
by Piggy
Avogadro wrote:
Piggy wrote:
Avogadro wrote:
I think it would double?
Incorrect.
Should I give the answer now or wait?
Actually, I think I figured out my issue.
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.
Re: Chem Lab C
Posted: February 13th, 2017, 10:38 am
by 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.