NEET | 2017Chemical BondingHard

Question

For a given reaction, ∆H = 35.5 kJ mol-1 and ∆S = 83.6 JK-1mol-1. The reaction is spontaneous at : (Assume that ∆H and ∆Sdo not vary with tempearature)

Options

A.

T > 425 K

B.

All temperatures

C.

T > 298 K

D.

T < 425 K

Solution

∆G=∆H-T∆G
for equilibrium ∆G=0
∆H=T∆S
Teq.=∆H∆S=35.5×100083.6=425 K
Since the reaction is endothemic it will be spontaneous at T > 425K. Option (1)

Create a free account to view solution

View Solution Free
Topic: Chemical Bonding·Practice all Chemical Bonding questions

More Chemical Bonding Questions

A following mechanism has been proposed for a reaction:2A + B &#8594; D + EA + B &#8594; C + D (slow)A + C &#8594; E (fa...Which one of the following pairs is isostructural (i.e. having the same shape and hybridization)?...Which of the following combination(s) lead(s) to the formation of gerade molecular orbital(s) -...For the following reaction if equal mass of A and B are taken : A + 2B &#8594; CWhich of the following is/are correct ? ...When two equal sized pieces of the same metal at different temperatures Th (hot piece) and Tc(cold piece) are brought in...