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Grade 12Inorganic Chemistry

for a reaction of nth order the ratio of t(half)/t(3/4) is a function of

Profile image of Nitesh Shukla
14 Years agoGrade 12
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2 Answers

Profile image of Sunil Kumar FP
12 Years ago
Therate laworrate equationfor achemical reactionis an equation that links thereaction ratewith concentrations or pressures of reactants and constant parameters To determine the rate equation for a particular system one combines the reaction rate with amass balancefor the system.

The half-life for a general nth order reaction is given by the expression .
t(1/2) = {2^(n-1) - 1} / {k(n-1)([A]^(n-1))}
the integrated rate law will be given by
1/A^n-1=1/A0^n-1 +(n-1)kt
therefore t1/2 /t3/4=2^n-1 -1/4^n-1 -1
Profile image of Prabhleen Kaur
8 Years ago
t1/2=1/kn*1/(n-1)*1/(a^n-1)*(2^(n-1)-1)
t3/4=1/kn*1/(n-1)*1/(a^n-1)*(4^(n-1)-1)
Ratio 
t1/2/t3/4=(2^n-1-1)/(4^n-1-1)