Question
Explain the term Instantaneous rate of a reaction.
✓
Answer
Instantaneous rate of a reaction: It is defined as a rate of a reaction at a specific instant during a course of the reaction.
If the average reaction rate is calculated over shorter and shorter intervals (making $\Delta$ t very small) then instantaneous rate is obtained.
In case of reactant $A$, the instantaneous rate is represented as, $R=\frac{-d[ A ]}{d t}$ and in case of product $B$, it is represented as $R=\frac{+d[B]}{d t}$
If the average reaction rate is calculated over shorter and shorter intervals (making $\Delta$ t very small) then instantaneous rate is obtained.
In case of reactant $A$, the instantaneous rate is represented as, $R=\frac{-d[ A ]}{d t}$ and in case of product $B$, it is represented as $R=\frac{+d[B]}{d t}$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Write IUPAC names of the following:
$5\%$ aqueous solution of cane sugar has freezing point of $271 K.$ Calculate freezing point of $5\%$ glucose solution.
$[$Molar mass of cane sugar $= 342 \ g \ mol^{-1}]$
→$[$Molar mass of cane sugar $= 342 \ g \ mol^{-1}]$
Define: $(a)$ Reversible process $(b)$ Standard enthalpy of combustion.
Calculate the enthalpy change for the reaction: $N _{2( g )}+3 H _{2( g )} \longrightarrow 2 NH _{3( g )}$.
The bond enthalpies are:
→Calculate the enthalpy change for the reaction: $N _{2( g )}+3 H _{2( g )} \longrightarrow 2 NH _{3( g )}$.
The bond enthalpies are:
| Bond | $N \equiv N$ | $H-H$ | $N-H$ |
| $\Delta H ^0$ in $kJ mol ^{-1}$ | $946$ | $435$ | $389$ |
Oxygen has low electron gain enthalpy in group 16 elements. Explain.
Explain the reactivity of Group 18 towards halogens.
The reaction $A + B \longrightarrow$ products is first order in each of the reactants.
(a) How does the rate of reaction change if the concentration of $A$ is increased by factor 3 ?
(b) What is the change in the rate of reaction if the concentration of $A$ is halved and concentration of $B$ is doubled?
→(a) How does the rate of reaction change if the concentration of $A$ is increased by factor 3 ?
(b) What is the change in the rate of reaction if the concentration of $A$ is halved and concentration of $B$ is doubled?
Lowering of vapour pressure of a solution
How is benzaldehyde obtained from benzoyl chloride?###Write chemical equation for Rosenmund reduction.
How will you affect the following two-step conversions? Diethyl ether into n-butane :
$K_p$ for the reaction,
$MgCO _{3( s )} \rightarrow MgO _{( s )}+ CO _{2( g )} \text { is } 9 \times 10^{-10} \text {. }$
Calculate $\Delta G^0$ for the reaction at $25^{\circ} C$.
→$MgCO _{3( s )} \rightarrow MgO _{( s )}+ CO _{2( g )} \text { is } 9 \times 10^{-10} \text {. }$
Calculate $\Delta G^0$ for the reaction at $25^{\circ} C$.