Question

When the bottle of soft drink is opened, what would take place from the following?
(A) Solubility of dissolved gas decreases.
(B) bottle released internal pressure.
(C) effervences evolved from the bottle.
(D) increase in external pressure.
Identify the correct choice.

• A. (A), (B) and (C) only.
• B. (A), (B) and (D) only.
• C. (A), (B), (C) and (D).
• D. (B), (C) and (D) only.

Hint:

Henry law: opening the bottle drops the pressure above the liquid, and the gas leaves the solution.

Answer 1

The Correct Option is A

Step 1: Approach
Follow what happens in time after the cap is removed.

Step 2: Sequence of events
1. The sealed gas space at high pressure is exposed to air, so the internal pressure drops (B).
2. At lower pressure the water can hold less $\text{CO}_2$, so solubility falls (A).
3. The extra gas leaves as bubbles, called effervescence (C).

Step 3: Statement (D)
Air pressure outside the bottle stays about 1 atm all the time. There is no rise in external pressure, so (D) does not occur.

Step 4: Conclusion
Statements (A), (B), (C) occur, which is option (A).

Final Answer:
Statements (A), (B) and (C) occur, while (D) does not, so the answer is option (A). \[ \boxed{\text{(A), (B) and (C) only}} \]