The gas hydrogen and chlorine do not react with each other even if kept together for a long time. However, in the presence of sunlight, they readily combine. What actually happens ?
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It is true that hydrogen and chlorine hardly react with each other even if kept together for long but they readily combine in the presence of sunlight.
This is due to the combination reaction that takes place between them in the presence of heat.
Since, both hydrogen and chlorine have molecules that are diatomic, when they come together under sunlight, energy is provided to them which break the bonds between atoms of hydrogen and chlorine and results in the formation of hydrogen chloride molecule.
This is due to the combination reaction that takes place between them in the presence of heat.
Since, both hydrogen and chlorine have molecules that are diatomic, when they come together under sunlight, energy is provided to them which break the bonds between atoms of hydrogen and chlorine and results in the formation of hydrogen chloride molecule.
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We know that in chemical reactions, energy is needed to break the bonds present in the reacting molecules so that they may combine to form the products. In the present case, sunlight is the source of energy in the form of photons. The energy made available helps in breaking the bonds present in the reactant molecules and the chemical reaction leading to hydrogen chloride gas takes place.
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