A first order reaction has a specific reaction rate of 10-2s-1. How much time will it take for 20 g of the reactant to reduce to 5 g?
(a) 238.6 s (b) 138.6 s (c) 346.5 s (d) 693.0 s
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe decomposition of phosphine (PH3) on tungsten at low pressure is a first-order reaction. It is because the
(1) rate is proportional to the surface coverage
(2) rate is inversely proportional to the surface coverage
(3) rate is independent of the surface coverage
(4) rate of decomposition is very slow
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe rate of a first-order reaction is 0.04 mol L-1 s-1 at 10 sec and 0.03 mol L-1 s-1 at 20 sec after initiation of the reaction. The half-life period of the reaction is
1. 34.1 s
2. 44.1 s
3. 54.1 s
4. 24.7 s
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyPrefer Books for Question Practice? Get NEETprep's Unique MCQ Books with Online Audio/Video/Text Solutions via Telegram Bot
NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology