30. An unopened soda can has an aqueous CO2 concentration of 0.0506 M at 25°C. What is the pressure of CO2 gas in the can?
31. Consider the substances in the table below and decide whether mixing the substances according to the table will result in miscible or immiscible solutions: water, butane, benzene, carbon tetrachloride, ethanoic acid, octanol, ethanol.
Table:
1. Water
2. Butane
3. Benzene
4. Carbon tetrachloride
5. Ethanoic acid
6. Octanol
7. Ethanol
Mixing Results:
i. Miscible: 1 and 2
ii. Immiscible: 1 and 6
iii. Immiscible: 1 and 6
iv. Miscible: 2 and 3
v. Immiscible: 5 and 7
vi. Miscible: 4 and 7
vii. Miscible: 3 and 4
viii. Miscible: 1 and 5