320302
In the presence of a catalyst, the heat evolved or absorbed during the reaction is
1 Increases
2 Decreases
3 Remains unchanged
4 May increase or decrease
Explanation:
In the presence of catalyst, the heat absorbed, or evolved during the reaction remains unchanged as there is no change.
NCERT Exemplar
CHXII04:CHEMICAL KINETICS
320303
The addition of a catalyst during a chemical reaction alters which of the following quantities?
1 Internal energy
2 Enthalpy
3 Activation energy
4 Entropy
Explanation:
Catalyst can affect only activation energy of the chemical reaction and cannot alter any thermodynamic parameters: \({\rm{(i}}{\rm{.e}}{\rm{.,}}\,\,{\rm{\Delta H,}}\,\,{\rm{\Delta G,}}\,\,{\rm{\Delta S)}}\)
320302
In the presence of a catalyst, the heat evolved or absorbed during the reaction is
1 Increases
2 Decreases
3 Remains unchanged
4 May increase or decrease
Explanation:
In the presence of catalyst, the heat absorbed, or evolved during the reaction remains unchanged as there is no change.
NCERT Exemplar
CHXII04:CHEMICAL KINETICS
320303
The addition of a catalyst during a chemical reaction alters which of the following quantities?
1 Internal energy
2 Enthalpy
3 Activation energy
4 Entropy
Explanation:
Catalyst can affect only activation energy of the chemical reaction and cannot alter any thermodynamic parameters: \({\rm{(i}}{\rm{.e}}{\rm{.,}}\,\,{\rm{\Delta H,}}\,\,{\rm{\Delta G,}}\,\,{\rm{\Delta S)}}\)
