alleryStart learning →An equation written with a double arrow indicates a reaction that is
AIrreversible only going forward to products
BReversible, going both forward and backward
CIrreversible only going backward to reactants
DEndothermic only and never exothermic
Answer & Solution
Correct answer: B. Reversible, going both forward and backward
1. A single arrow shows a one-way reaction.
2. A double-headed arrow shows both forward and backward steps.
3. This means the reaction is reversible.
4. It says nothing about heat absorbed or released.
_Source: Selina Concise Chemistry Class 9, Ch 4 The Language of Chemistry (Mistral OCR'd PDF), section on equations_
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