40% of HI undergoes decomposition to and at 300 K. for this decomposition reaction at one atmosphere pressure is (nearest integer).

(Use ; , , )

Question

40% of HI undergoes decomposition to  and  at 300 K.  for this decomposition reaction at one atmosphere pressure is   (nearest integer).

(Use ; , , )

Canvas Classes · Accepted Answer

Strategy:
 Calculate the equilibrium constant  from the dissociation fraction () using an ICE table, then relate it to .

Step 1: ICE Table (moles)
Reaction: 
Initial:  mol 
Eq:  mol  mol  mol .
Eq:  mol  mol  mol .

Step 2: 
.

Step 3: Calculate

.

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