Most of the naturally occuring processes are spontaneous.
Exothermic reactions associated with a decrease in entropy are spontaneous at lower temperatures. Justify on the basis of Gibbs equation.

Most of the naturally occurring processes are spontaneous. a) Give the criteria for spontaneity of a process in terms of free energy change ( DeltaG ) b) Exothermic reactions associated with a decrease in entropy are sponaneous at lower temperatures. Justify on the basis of Gibbs equation. c) Find the temperature above which the reactin MgO_((s))+C_((s))rightarrow Mg_((s))+CO_((g)) becomes spontaneous. (Given ( Delta_rH^theta=490kJmol^-1 & Delta_rS^theta=198JK mol^-1 )

Most of the naturally occuring processes are spontaneous. Give the criteria for spontaneity of a process in terms of free energy change (DeltaG) .

Most of the naturally occuring processes are spontaneous. Find the temperature above which the reaction, MgO(s) + C(s) rarr Mg(s) + CO(g) becomes spontaneous. (Given Delta_rH^@ = 490 kJ//mol and Delta_rS^@ = 198 J//molK )

Why most of the exothermic processes (reactions) are spontaneous?

Assertion : At constant temperature and pressure chemical reactions are spontaneous in the direction of decreasing Gibb's energy Reason : For every chemical reaction at equilibrium standard Gibb's energy of the reaction is zero

Adsorption of a gas on the surface of solid is generally accompanied by decrease in entropy. Still it is a spontaneous process. Explain.

A reaction, A + B rarr C + D+ q is found to have a positive entropy change. The reaction will be spontaneous at which temperature?