Chemistry - Study Mode

[#751] Which of the following kinds of spectroscopy can provide information on the energy difference between the initial and final states rather the energy levels involved in the transition?
Correct Answer

(B) UV photoelectron spectroscopy

Explanation

Solution: UV photoelectron spectroscopy can provide information on the energy difference between the initial and final states rather the energy levels involved in the transition.

[#752] When ice cubes are made, the entropy of water
Correct Answer

(B) Decreases

Explanation

Solution: During formation of ice cubes orderedness increases, i.e., disorderness decreases, hence entropy decreases.

[#753] Warming ammonium chloride with sodium hydrochloride in a test tube is an example of
Correct Answer

(A) Open system

Explanation

Solution: Warming Ammonium Chloride with Sodium Hydroxide in a test tube is an example of an Open System.

[#754] For a spontaneous chemical process, the free energy change is
Correct Answer

(B) Negative

Explanation

Solution: For a spontaneous chemical process, the free energy change is negative.

[#755] When a bond is formed between two atoms, the energy of the system will
Correct Answer

(C) Remain the same

Explanation

Solution: When a bond is formed between two atoms the energy of the system will decrease.