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Author Question: How much energy (kJ) is released if 10.0g of Al(s) is reacted with excess Fe2O3(s) in the thermite ... (Read 2 times)

allihubbard

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Question 1

For the reaction 3Fe(s) + C(s) Fe3C(s), ΔH° = 21 kJ/mol and ΔS° = 20.4 J/mol·K at 25°C.  Estimate the minimum temperature above which the formation of cementite (Fe3C) is favored.
◦ 1.0°C
◦ 970°C
◦ 700°C
◦ 1000°C
◦ 760°C

Question 2

How much energy (kJ) is released if 10.0g of Al(s) is reacted with excess Fe2O3(s) in the thermite reaction:  2Al(s) + Fe2O3(s) → Al2O3(s) + 2Fe(l)  Δ = - 822.8 kJ/mol
◦ 8,230 kJ
◦ 823 kJ
◦ 305 kJ
◦ 152 kJ
◦ 4,110 kJ


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Marked as best answer by allihubbard on Nov 5, 2023

fowlerhop@rocketmail.com

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allihubbard

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Reply 2 on: Nov 5, 2023
Excellent


ttt030911

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Reply 3 on: Yesterday
:D TYSM

 

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