MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Physical ChemistryChemical kineticsOrder and Molecularity of Reactions
In the presence of acid, the initial concentration of cane-sugar was reduced from 0.2 M to 0.1 M in 5 hrs and to 0.05 M in 10 hrs. The reaction must be of
A.zero-order
B.first order✓ Correct
C.second order
D.fractional order
Explanation
Concentration is halved in regular interval i.e., 5 hours without showing dependence on concentration of reactant, so order of reaction is first order.