In a chemical equation, in which situation is the symbol (aq) correctly used?
Answer and explanation
Correct answer: When the substance is dissolved in water
The state symbol (aq) means aqueous. It is written when a substance is dissolved in water and exists as part of an aqueous solution, for example NaCl(aq). Therefore option A is correct. A solid substance is shown by (s), a liquid by (l), and a gas by (g). Light emission is not represented by a physical-state symbol, so options B, C and D do not give the meaning of (aq).
Frequently asked questions
What is the correct answer to this question?
When the substance is dissolved in water
Why is this the correct answer?
The state symbol (aq) means aqueous. It is written when a substance is dissolved in water and exists as part of an aqueous solution, for example NaCl(aq). Therefore option A is correct. A solid substance is shown by (s), a liquid by (l), and a gas by (g). Light emission is not represented by a physical-state symbol, so options B, C and D do not give the meaning of (aq).
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.
