Say TRUE or FALSE?
Any spontaneous process must lead to a net increase in entropy of the universe.

In a reversible process the total change in entropy is DeltaS (universe) is

Say TRUE or FALSE. Boron in aqueous solution forms B^(3+) ion.

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.

For a spontaneous process, which of the following is always true?

Say TRUE of FALSE. Calcium carbide on hydrolysis gives ethylene.

Energy of a body is defined as its capacity of doing work. State whether the following statement is TRUE or FALSE. "The change in kinetic energy of a particle is equal to the work done on it by the net force"

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

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 )