Tin is obtained from cassiterite by reduction with coke. Use the data given below to determine the minimum temperature (in$$ $$K) at which the reduction of cassiterite by coke would take place. At $$298K$$:ΔfH∘$$SnO2(s)=$$−$$581.0kJmol$$−$$1$$,ΔfH∘$$CO2(g)=$$−$$394.0kJmol$$−$$1S$$∘$$SnO2(s)=56.0JK$$−$$1mol$$−$$1$$,S∘$$(Sn(s))=52.0JK$$−$$1mol$$−$$1S$$∘$$(C(s))=6.0JK$$−$$1mol$$−$$1$$,S∘$$CO2(g)=210.0JK$$−$$1mol$$−$$1$$

Question

Tin is obtained from cassiterite by reduction with coke. Use the data given below to determine the minimum temperature (in$$ $$K) at which the reduction of cassiterite by coke would take place.  At $$298K$$:ΔfH∘$$SnO2(s)=$$−$$581.0kJmol$$−$$1$$,ΔfH∘$$CO2(g)=$$−$$394.0kJmol$$−$$1S$$∘$$SnO2(s)=56.0JK$$−$$1mol$$−$$1$$,S∘$$(Sn(s))=52.0JK$$−$$1mol$$−$$1S$$∘$$(C(s))=6.0JK$$−$$1mol$$−$$1$$,S∘$$CO2(g)=210.0JK$$−$$1mol$$−$$1$$

Infinity Learn · Accepted Answer

$$SnO2(S)+C(S)$$⟶$$Sn(S)+CO2(g)$$ΔHrxn∘$$=$$[−$$394$$]−[−$$581$$]$$=187kJ/mole$$ΔS∘$$rxn=$$[$$52+210$$]−[$$56+6$$]$$=$$ $$200$$ $$J/k$$–$$moleT=$$ΔH∘ΔS∘$$=187$$×$$1000200=935K$$

Start JEE / NEET / Foundation preparation at rupees 99/day !!

Detailed Solution

Get Expert Academic Guidance – Connect with a Counselor Today!