The law of conservation of mass is valid for which of the following ??
(i) Reactions involving oxidation
(ii) Nuclear reactions
(iii) Endothermic reaction
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ii) nuclear reaction
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» Law of conservation of mass is valid for chemical reactions and not for nuclear reactions.
» According to law of conservation of mass, during any physical or chemical changes, the total mass of the product is equal to the total mass of the reactants. But in nuclear fusion reaction if consider an example, energy that sun emits in its cone is due to collision of hydrogen nuclei and formation of helium nuclei. Hence, conservation of mass is not obeyed as certain part of mass is converted into energy. So, law of conservation of mass is violated here. Then, law of conservation must be redefined as during any physical or chemical change, the total mass of the product is equal to the total mass of reactant provided mass has not undergone conservation into energy.
» According to law of conservation of mass, during any physical or chemical changes, the total mass of the product is equal to the total mass of the reactants. But in nuclear fusion reaction if consider an example, energy that sun emits in its cone is due to collision of hydrogen nuclei and formation of helium nuclei. Hence, conservation of mass is not obeyed as certain part of mass is converted into energy. So, law of conservation of mass is violated here. Then, law of conservation must be redefined as during any physical or chemical change, the total mass of the product is equal to the total mass of reactant provided mass has not undergone conservation into energy.
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