Advertisements
Advertisements
प्रश्न
What is the effect of catalyst on activation energy of a reaction?
Advertisements
उत्तर
The catalyst provides an alternate pathway or reaction mechanism by reducing the activation energy between reactants and products.
APPEARS IN
संबंधित प्रश्न
What is the value of for the following reaction at 298 K -
6CO2+ 6H20(l) → C6H1206(s) + 602(g),
Given that: ΔG° = 2879 kj mol-1, AS = -210 JK-1 mol-1.
With the help of the equation ΔG° = - nFEocell. Explain that cell potential is an intensive property.
Following reactions occur at cathode during the electrolysis of aqueous silver chloride solution :
`Ag^+(aq)+e^(-)rarrAg(s)" "" "" "E^@=+0.80V`
`H^+(aq)+e^(-)rarr1/2H_2(g)" "" "" " E^@=0.00V`
On the basis of their standard reduction electrode potential (E°) values, which reaction is feasible at the cathode and why ?
Calculate ΔrG° for the reaction
Mg (s) + Cu2+ (aq) → Mg2+ (aq) + Cu (s)
Given : E°cell = + 2.71 V, 1 F = 96500 C mol–1
Potential of saturated calomel electrode is-
The electrical work done in a galvanic cell is equal to ______
The Gibb's energy change (in J) for the given reaction at [Cu2+] = [Sn2+] = 1 M and 298 K is ______.
\[\ce{Cu(s) + Sn^{2+}(aq) -> Cu^{2+}(aq) + Sn(s)}\]
`["E"_("Sn"^(2+)//"Sn")^0 = -0.16 "V", "E"_("Cu"^(2+)//"Cu")^0 = 0.34 "V", "Take F" = 96500 "C mol"^-1]`
The e.m.f. of cell Zn | ZnSO4 | | CuSO4 | Cu at 25°C is 0.03 V and the temperature coefficient of e.m.f. is −1.4 × 10−4 V/K. The heat of reaction for the change taking place inside the cell is ______ kJ/mol.
The cell potential for the following cell
\[\ce{Pt|H2 (g)| H+ (aq)||Cu^{2+} (0.01 M)| Cu(s)}\]
is 0.576 Vat 298 K. The pH of the solution is ____. (Nearest integer)
The standard Gibbs energy for the given cell reaction in kJ mol-1 at 2'98 K is:
\[\ce{Zn(s) + Cu^{2+} (aq) -> Zn^{2+} (aq) + Cu(s)}\]
E° = 2 V at 298 K
(Faraday's constant, F = 96000 C mol-1)
