Two moles of HI was heated . HI was found to 22 % decomposed . The Kc for dissociation ? A ) 0.02 M , B ) 1.01 M , C ) 3.5 M , D ) None of these ,

1 ) Two moles of HI was heated .  HI was found to 22 % decomposed . The Kc for dissociation ?

A ) 0.02 M ,                                              B ) 1.01 M ,

C )  3.5 M ,                                      D ) None of these ,

Correct Answer : -  A ) 0.02 M ,

solution : -

2 ) The branch of chemistry which convert chemical energy into electrical energy and electrical energy into chemical energy is called . . . . . . . . . . . . . . . ( Electrochemistry ) .

 

3 ) When an electrical current passes through a solution (often of electrolytes ) , a cation or neutral molecules gets reduced at cathode and anion or neutral molecules gets oxidized at anode .

 

4 ) Specify A and B : -

i )      A ) trans .         B ). cis .  ,

ii )     A ) cis .             B ). trans  ,

iii )    A and B both are trans .  ,

iv )    A and B both are cis .  ,

Answer : -   i )     A ) trans .         B ). cis .  ,

 

5 ) The equilibrium constant in a reversible chemical reaction  . . . . . . . . . . . . . .  on initial concentration of reactants .

A ) depend  ,                                    B )  doesn't depend  ,

C ) may or may not ,                                D ) None of these ,

Correct Answer : -  B )  doesn't depend  ,

 

6 ) The equilibrium constant for a reaction is ( A + 2B ------> 2C ) is 40 .  The equilibrium constant for reaction is    ( C -----> B + (1/2)A ) is : -

A )  √ ( 1 / 20 ) ,                                         B ) √ ( 1 / 30 ) ,

C )  √ ( 1 / 40 ) ,                                       D ) None of these ,

Correct Answer : -  C )  √ ( 1 / 40 ) , 

Solution : -