When is a downward arrow used in a chemical equation?
Answer and explanation
Correct answer: When an insoluble solid forms as a precipitate
In a chemical equation, a downward arrow denotes a precipitate. A precipitate is an insoluble solid formed during a reaction in solution. Therefore, a downward arrow is used when an insoluble solid forms. In contrast, the evolution of a gas is generally shown by an upward arrow.
Frequently asked questions
What is the correct answer to this question?
When an insoluble solid forms as a precipitate
Why is this the correct answer?
In a chemical equation, a downward arrow denotes a precipitate. A precipitate is an insoluble solid formed during a reaction in solution. Therefore, a downward arrow is used when an insoluble solid forms. In contrast, the evolution of a gas is generally shown by an upward arrow.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Chemical Reactions and Equations.
