Acetylene, C2H2, can be converted to ethane, C2H6, by a process known as hydrogenation. The reaction is C2H2(g)+2H2(g)?C2H6(g)
Given the following data, what is the value of Kp for this reaction?
Substance ΔG∘f
(kJ/mol)
C2H2(g) 209.2
H2(g) 0
C2H6(g) -32.89

Answer : The  value of for this reaction is,

Explanation :

The given chemical reaction is:

Now we have to calculate value of .

where,

= Gibbs free energy of reaction = ?

n = number of moles

= -32.89 kJ/mol

= 209.2 kJ/mol

Now put all the given values in this expression, we get:

The relation between the equilibrium constant and standard Gibbs, free energy is:

where,

= standard Gibbs, free energy

R = gas constant  = 8.314 J/L.atm

T = temperature  = 298 K

= equilibrium constant = ?

Now put all the given values in this expression, we get:

Thus, the value of for this reaction is,

the positions which points up in upward carbon and down in downward carbon are axial

and vice versa holds true for equatorial positions

so the correct answer with labelled diagram will be

geosphere and hydrosphere.

this is because the geosphere has to do with geological events, while the hydrosphere controls all water on earth.