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Which state symbol is used to represent a solid substance in a chemical equation?

Answer and explanation

Correct answer: (s)

The correct answer is A: (s). In a chemical equation, a state symbol is written in brackets after a substance’s formula to show its physical state. The letter s stands for solid, so NaCl(s) means solid sodium chloride. Option B, (g), is wrong because g means gaseous state. Option C, (l), is wrong because l means liquid state. Option D, (aq), is wrong because it means the substance is dissolved in water and forms an aqueous solution; it is not the general symbol for a solid. A useful memory cue is: s = solid, l = liquid, g = gas, and aq = aqueous. These symbols describe physical state, not the number of atoms or the type of reaction.

Related tags

Chemical EquationsState SymbolsSolid StateClass 10 ScienceChemical Reactions And EquationsChemical Substances – Nature And BehaviourChemical Substances Nature And BehaviourScience

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