Please help determining which statement best describes the situation. Thanks! A

Question

Please help determining which statement best describes the situation. Thanks!

A simple kitchen chemistry experiment requires placing some vinegar in a soda bottle. A deflated balloon containing baking soda is stretched over the mouth of the bottle. Adding the baking soda to the vinegar starts the following reaction and inflates the balloon: NaHCO3 (aq) + CH_3C0_2H(aq) squareroot CH_3CO_2Na(aq) + CO_2(aq) + H_2O(l) If the contents of the bottle and balloon are considered the system, which of the following best describes the situation? Work is being done on the system because the volume of the system is decreasing. Work is being done on the system because the pressure of the system is increasing. Work is being done on the surroundings because the volume of the system is increasing. Work is being done on the system because the volume of the system is increasing. Work is being done on the surroundings because the pressure of the surroundings is increasing.

Explanation / Answer

Here the number of moles of reactants are 1+1 = 2 moles

and that of products are 1+1+1 = 3 moles

So the number of moles increasing so the volume of the system increses.That means the system is done some work.

Therefore work is done on the surrounding by the system.

Therefore the correct option is (3) that is work is being done on the surroundings because the volume of the system is increasing

Related Questions

Navigate

• Browse (All)
• Browse P
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.