Question

What will be the order of reaction and rate constant for a chemical change having log $t_{50}$% vs. log concentration (a) curves as?

• A. 0, 1
• B. 1, 1
• C. 2, 2
• D. 3, 1

Answer 1

Answer: (A)

0, 1

The order of reaction and rate constant for a chemical reaction will be 0 and 1 respectively.

For a reaction $t_{1/2}\propto (a{)}^{1-n}=K(a{)}^{1-n}$

or $log{t}_{1/2}=(1-n)loga+logK$

$y=mx+c$

$\therefore 1-n=tan45=1$

$\therefore n=0$

Also intercept $=0$

$\therefore lo{g}_{10}K=0$

$K=1$