Which of the following is an exothermic reaction?
A. dissolving sugar in water
B. oxidation of iron
C. dissolving ammunition nitrate in water to cool the water
D. melting ice

Option A) dissolving sugar in water

Explanation:

Sugar belongs to the class of food nutrients called carbohydrates, and it contains high energy bonds in its atoms that reacts with water thereby spontaneously releasing energy (in form of heat) to the surroundings.

Unlike others, energy is released when sugar is dissolved in water, thus the reaction is an example of exothermic reaction.

brian made this table to organize his notes on changes of state. depostion is a change of state that has the wrong energy change listed. it is utilized to collect data as a portion of the development means and in restricted conditions which may be applied at test.

a deposition in the authority of the united states or research for development in the authority of canada includes the catching of affirmed. the out-of-court verbal assertion of a spectator that may be lessened to a printed record for succeeding application for discovery purposes.