Question

Determine whether the statements given below are true or false. Consider an endothermic process taking place in a beaker at room temperature. (a) Heat flows from the surroundings to the system. (b) The beaker is cold to the touch. (c) The pressure of the system decreases. (d) The value of \(q\) for the system is positive.

Short answer

a) Heat flows from the surroundings to the system. b) The beaker is cold to the touch. c) The pressure of the system decreases. d) The value of \(q\) for the system is positive. Answer: a) True, b) True, c) Inconclusive, d) True

Step-by-step solution

Statement (a) - Heat Flow

True. In an endothermic process, heat is absorbed by the system from the surroundings. Therefore, heat flows from the surroundings to the system.

Statement (b) - Cold to Touch

True. As the system absorbs heat from its surroundings, the temperature of the beaker might decrease, making it feel cold to the touch.

Statement (c) - Pressure Decrease

Inconclusive. The pressure of the system in an endothermic process depends on various factors, such as the change in volume and the pressure-temperature relationship for the substance. Therefore, it's not possible to definitively state if the pressure decreases or not.

Statement (d) - Value of \(q\)

True. In an endothermic process, heat is absorbed by the system, and \(q\) is defined as positive when heat flows into the system. Therefore, the value of \(q\) for the system is positive.