The rates of a certain reaction (dc/dt) at different times are as follows Time Rate(mole litre-1sec-1) 0 2.8×10-2 10 2.78×10-2 20 2.81×10-2 30 2.79×10-2 The reaction is

Question

The rates of a certain reaction (dc/dt) at different times are as follows Time Rate(mole litre-1sec-1) 0 2.8×10-2 10 2.78×10-2 20 2.81×10-2 30 2.79×10-2 The reaction is (A) Zero order (B) First order (C) Second order (D) Third order

Tardigrade Admin · Accepted Answer

The concentration of reactant does not change with time for zero order reaction (unit of K suggests zero order) since reactant is in excess.

Time	$R a t e (m o l e l i t r e^{- 1} se c^{- 1})$
0	$2.8 \times 1 0^{- 2}$
10	$2.78 \times 1 0^{- 2}$
20	$2.81 \times 1 0^{- 2}$
30	$2.79 \times 1 0^{- 2}$

Q. The rates of a certain reaction (dc/dt) at different times are as follows Time Rate(molelitre−1sec−1) 0 2.8×10−2 10 2.78×10−2 20 2.81×10−2 30 2.79×10−2 The reaction is

Zero order

First order

Second order

Third order

The concentration of reactant does not change with time for zero order reaction (unit of K suggests zero order) since reactant is in excess.

Q. The rates of a certain reaction $(d c / d t)$ at different times are as follows

Time $R a t e (m o l e l i t r e^{- 1} se c^{- 1})$

0 $2.8 \times 1 0^{- 2}$

10 $2.78 \times 1 0^{- 2}$

20 $2.81 \times 1 0^{- 2}$

30 $2.79 \times 1 0^{- 2}$

The reaction is