The gases hydrogen & 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 does actually happen?
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For a reaction to occur a minimum amount of energy is required to break existing bonds and form new bonds, this energy has to be supplied in form of heat. In case of HCl formation energy is supplied by of photons of light is enough and hence it occurs in presence of sunlight.
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For a reaction to occur a minimum amount of energy is required to break existing bonds and form new bonds, this energy has to be supplied in form of heat. In case of HCl formation energy is supplied by of photons of light is enough and hence it occurs in presence of sunlight.
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