In a closed insulated container a liquid is stirred with a paddle to increase

In A Closed Insulated Container A Liquid Is Stirred With Chemistry QuestionIn A Closed Insulated Container A Liquid Is Stirred With Chemistry Question

In a closed insulated container a liquid is stirred with a paddle to increase the temperature which of the following is true

Options

(a) ΔE = w ≠ 0, q = 0
(b) ΔE = w = q ≠ 0
(c) ΔE = 0, w = q ≠ 0
(d) w = 0, ΔE = q ≠ 0

Correct Answer:

ΔE = w ≠ 0, q = 0

Explanation:

The mathematical form of first law of thermodynamics : q = ΔE + W, Since the system is closed and insulated, q = 0, Paddle work is done on system. Therefore W ≠ 0. Temperature and hence internal energy of the system increases. Therefore ΔE ≠ 0.

AddThis Website Tools
admin:

Related Questions

  1. Which of the following is used as refrigerant
  2. The hydrolysis of 2-bromo-3-methylbutane by SN1mechanism gives mainly
  3. How much copper is supposed to be deposited when a current of 0.75 amperes
  4. Which of the following 0.1M solution will show maximum boiling point
  5. Arrange the following in increasing order of acidity H₃PO₄ , H₂CO₃ , HCl , HI