Answer:
v/v % = 24.522 %
Explanation:
A percent v/v solution is calculated by the following formula using the milliliter as the base measure of volume (v):
v/v % = [(volume of solute) / (volume of solution)] x 100%
In this problem, the solute is ethylene gycol.
Mass = 136.1 g
Density = 1.11 g/mL
Density = Mass / Volume
Volume = Mass / Density = 136.1 / 1.11 = 122.61 mL
Volume of solution = 500 mL
v/v % = [(volume of solute) / (volume of solution)] x 100%
v/v % = (122.61 / 500 ) x 100
v/v % = 0.24522 x 100
v/v % = 24.522 %
Answer:
ΔG = -105.4 kJ/mol
The system is spontaneous as written.
Explanation:
Step 1: Determine Gibbs free energy of reaction (ΔG)
We use the following expression.
ΔG = ΔH - T × ΔS
where,
ΔG = ΔH - T × ΔS
ΔG = 120.5 kJ/mol - 298 K × 0.7582 kJ/mol.K
ΔG = -105.4 kJ/mol
Step 2: Determine the spontaneity of the system.
Since ΔG < 0, the system is spontaneous as written.
1.5x10
=15N
sorry if im wrong
Answer:
Acetone will vaporize from the mixture before water.
Explanation:
You have mentioned that the bp of water is 100°C and the bp of acetone is 56°C.We know that in the distillation process of mixture the substance having low bp vaporizes,condenses and gets collected in the separete container before the one having high bp.So the one having high bp remains in the original container and that is water.
Thus, the second option is correct.
Answer:
without temperature changes there wouldn't be any physical changes and vice versa
