Read the passage about a chemical reaction that causes a change in temperature. Then, follow the instructions below.

Question

To clean their drain pipes, some people make a solution of baking soda and vinegar. Baking soda, also known as sodium bicarbonate
(NaHCO3)
, reacts with acetic acid
(C2H4O2)
in vinegar. When these substances combine, the solution becomes colder, and sodium acetate
(NaC2H3O2)
, water
(H2O)
, and carbon dioxide gas
(CO2)
form. The gas creates bubbles that help clean the inside of the pipes.
Select the true statement.
A.this chemical reaction is exothermic it converts chemical energy to thermal energy which is released into the surroundings

B. this chemical reaction is endorsement it absorbs thermal energy from the surroundings and converts that energy to chemical energy

Answer 1

The true statement is:

B. This chemical reaction is endothermic; it absorbs thermal energy from the surroundings and converts that energy to chemical energy.

This is supported by the fact that the solution becomes colder when baking soda reacts with vinegar, indicating that it absorbs heat from the environment.