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ChemistryChemical KineticsSecond & nth Order ReactionsMedium2 minPYQ_2018

ChemistryMediumsingle choice

What is the correct difference between first and second order reactions?NEET 2018

Options:

Answer:

Solution:

$\Rightarrow$ $(t_{\frac{1}{2}}) \propto {(Initial concentration)}^{1 - order of Reaction}$ $(t_{\frac{1}{2}}) for 1^{st}$ order = Independent of Concentration

$(t_{\frac{1}{2}}) for 2^{nd}$ order $\propto \frac{1}{{[A]}_{0}}$

$\Rightarrow$ Rate of first order reaction $\propto {(A_{0})}^{1}$

Rate of second order reaction $\propto {(A_{0})}^{2}$ rate of first order reaction and second order reaction depends on initial concentration.

Stream:NEETSubject:ChemistryTopic:Chemical KineticsSubtopic:Second & nth Order Reactions

⏱ 2mℹ️ Source: PYQ_2018

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