The activation energy a simple chemical reaction- Arightarrow-B- is E-a in forward direction- The activation energy the reverse reaction-is negative of E-ais always than E-acan be than or than E-ais always double of E-a

Question

Toppr Admin · Accepted Answer

As we know-x394-H-Ea-f-x2212-Ea-b- if -x394-H-x2212-ve-Ea-b-gt-Ea-f-if -x394-H-ve-Ea-b-lt-Ea-f-

	Statement
I	For an endothermic reaction, the magnitude of $E_{a}$ is always greater than $△ H$ .
II	For an exothermic reaction, the magnitude of $E_{a}$ is always greater than $△ H$ .
III	For an exothermic reaction, adding a catalyst will decrease the magnitude of $△ H$ .

The activation energy for a simple chemical reaction, $A \to B$ is $E_{a}$ in forward direction. The activation energy for the reverse reaction:
is negative of $E_{a}$
is always less than $E_{a}$
can be less than or more than $E_{a}$
is always double of $E_{a}$

As we know,
$Δ H = E_{a_{(f)}} - E_{a_{(b)}}$ ; if $Δ H = - v e, E_{a_{(b)}} > E_{a_{(f)}}$
if $Δ H = + v e, E_{a_{(b)}} < E_{a_{(f)}}$

The activation energy for a simple chemical reaction, A→B is Ea in forward direction. The activation energy for the reverse reaction:is negative of Eais always less than Eacan be less than or more than Eais always double of Ea

As we know,ΔH=Ea(f)−Ea(b); if ΔH=−ve,Ea(b)>Ea(f)if ΔH=+ve,Ea(b)<Ea(f)

The activation energy for a simple chemical reaction, $A \to B$ is $E_{a}$ in forward direction. The activation energy for the reverse reaction:
is negative of $E_{a}$
is always less than $E_{a}$
can be less than or more than $E_{a}$
is always double of $E_{a}$

As we know,
$Δ H = E_{a_{(f)}} - E_{a_{(b)}}$ ; if $Δ H = - v e, E_{a_{(b)}} > E_{a_{(f)}}$
if $Δ H = + v e, E_{a_{(b)}} < E_{a_{(f)}}$