Use the reaction l2(s) = 12(9), AH = 62.4 kJ/mol, AS = 0.145 kJ/(mol-K), for this question
At what temperature is the reaction at equilibrium?
A. 157 K
B. 62 K
C. 0.002 K
D. 430 K

D.  430 K

Explanation:

Using Gibbs Helmholtz equation:

= Gibbs free energy  

= enthalpy change  = 62.4 kJ/mol

= +ve, reaction is non spontaneous

= -ve, reaction is spontaneous

= 0, reaction is in equilibrium

At equilibrium :

Thus at 430 K , the reaction is at equilibrium.

when the volume of gas is   changed from   717.73 ml   to 852 ml   the temperature will   change   from 315   c to 452   c

    calculation

this is calculated using the charles law formula

that is,   v1/t1 = v2/t2

          v1=?

        t1 = 315 c   into   kelvin = 315 +273 = 588 k

        v2 = 852   ml

        t2 = 425c + 273 =698 k

make v1   the subject of the formula ( by   multiplying both side by t1)

  v1=( v2 xt1) / t2

v1= (852 ml   x 588 k)/ 698 k= 717.73 ml

explanation:

0.07 g/cm³

1.37 g/cm³