MEDIUMMCQ SINGLEJEE Advanced ChemistryPhysical ChemistryMole _ Equivalent ConceptAtomic Theory
n g of substance X reacts with m g of substance Y to form p g of substance R and q g of substance S. This reaction can be represented as follows : X + Y = R + S The relation which can be established in the amounts of the reactants and the products will be
A.n – m = p – q
B.n + m = p + q✓ Correct
C.n = m
D.p = q
Explanation
According to law of conservation of mass, total mass before reaction and after reaction must be equal. ∴For the reaction, → ng mg pg qg X Y R S n m p q MOLE & EQUIVALENT CONCEPT 28
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