Multiple Choice
Which of the following best explains why bubbles form during a chemical reaction involving gas evolution?
6. Chemical Quantities & Aqueous Reactions
Gas Evolution Equations
Multiple Choice
Which of the following best explains what is occurring when bubbles form in a liquid during a chemical reaction?
A
A gas is being produced as a result of the reaction.
B
A solid is precipitating out of the solution.
C
The liquid is undergoing a color change.
D
The liquid is evaporating due to an increase in temperature.
Verified step by step guidance1
Understand that the formation of bubbles in a liquid during a chemical reaction typically indicates the production of a gas.
Recall that a gas produced in a reaction escapes the liquid phase and forms bubbles, which rise to the surface.
Recognize that a solid precipitating out would appear as a solid forming or settling, not as bubbles.
Note that a color change involves a change in the liquid's appearance, not the formation of bubbles.
Understand that evaporation involves a phase change from liquid to gas at the surface, but does not usually produce bubbles within the liquid.
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