Question

Unit of the constant of zero order reaction is:

• A. time $^{-1}$
• B. mol $L ^{-1}\, s ^{-1}$
• C. $L \,mol ^{-1} \,s ^{-1}$
• D. $L\, mol ^{-1}\, s ^{-1}$

Answer 1

Answer: (B)

mol $L ^{-1}\, s ^{-1}$

Answer 2

For zero order reaction
$=k[\text { conc. }]^{0}$
$\therefore k=$ Rate
or $k=\frac{\text { change in concentration }}{\text { time taken }}=\frac{ mol / L }{ s }$
$\therefore$ Units of $k$ are $mol \,L ^{-1} \,s ^{-1}$