Observe the graph in the diagram and answer the f ollowing questions:
(i) If slope is equal to `-2.0xx10^(-6)s^(-1)`, what will be the value of rate constant?
(ii) How does the half-life of zero order reaction relate to its rate constant?

Explanation

(i) The relation between slope and rate constant of a first order reaction is given by:
Slope `= -(k)/(2.303)`
or `k=-2.303xx` Slope
`=-2.303xx(-2.0xx10^(-6)s^(-1))`
`=4.606xx10^(-6)s^(-1)`
(ii) Half-life of a zero order reaction is reaction is rate constant by the equation:
`t_(1//2)= (A_(0))/(2k)`
where `A_(0)` is the initial concentration.