LeChatelier's Principle !!!! ?

plz help me with this problem
the following reaction may be used to remove sulfur compounds from power plant smokestack emission.

2HS(g) + SO2 >>>> 3S + 2H2O ...... DELTA h = -145 KJ
the value of the euilibrium constant for this reaction is 8.0*10^15 at 25 degree celsius.

a). given the value of K, is this reaction an effective way to clean smokestack emissions of sulfur compounds.?

b) would the efficiency of this reaction increase or decrease with increase in pressure?

c). how does the efficiency of this reaction in removing sulfur dioxide change as the temperature is increased?

1 answer

Is that HS(g) or HS^-(g)? Is that S(s)?
A. A huge K means the equilibrium is far to the right.
B. If that is S(s) there are two moles on the right and 3 on the left so increased P would shift the equilibrium to the right.
c. Increased T shifts the equilibrium to the left.
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