If a white insoluble solid forms in a solution but the temperature does not change, what is the correct conclusion?
Answer and explanation
Correct answer: A precipitation reaction is possible
A white insoluble solid formed from solution is called a precipitate, so its appearance is strong evidence that a precipitation reaction may have occurred. Temperature change is not required for every chemical reaction; some reactions produce too little heat to cause an observable change. Therefore option A is the most justified conclusion. The observation does not prove combustion or photolytic decomposition, and absence of temperature change does not prove that no reaction occurred.
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What is the correct answer to this question?
A precipitation reaction is possible
Why is this the correct answer?
A white insoluble solid formed from solution is called a precipitate, so its appearance is strong evidence that a precipitation reaction may have occurred. Temperature change is not required for every chemical reaction; some reactions produce too little heat to cause an observable change. Therefore option A is the most justified conclusion. The observation does not prove combustion or photolytic decomposition, and absence of temperature change does not prove that no reaction occurred.
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.
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