The metals Mg and Al, like most metals in groups 1A, 2A, and 3A of the periodic table, cannot be obtained by chemical reduction with carbori at reasonable temperatures. What process I5 used to obtain these metals from their ores? positive

Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter5: Principles Of Chemical Reactivity: Energy And Chemical Reactions
Section5.8: Product- Or Reactant-favored Reactions And Thermodynamics
Problem 2.1ACP
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Question
-1000
Decomposition Rezctions
Carbon Reduction Reactions
AH
AS
(kJ)
(JK-mol)
O 2 Ag,0(s) → 4 Ag(s) + O2(g)
+62.2
+132.7
O 2 MgO(s) → 2 Mg(s) + O2(g)
+1202.4
+216.7
1000-
O 2 AlhO3(s) → 4 Al(s) – 3 02(g)
+3351.4
+546.8
O 2 Fe2O3(s) → 4 Fe(s) – 3 O2(g)
+1648 4
+5515
O 2 HgO(s) → 2 Hg(t) + 0,(g)
+181.7
+286.8
2000-
O 2 Cr,03(s) → 4 Cr(s)– 3 0,(g)
2269 4
+548.4
Temperature
3000
300
300 K
2000
Temperature ((K)
Clear Graph
The metals Mg and Al, like most metals in groups 1A, 2A, and 3A of the periodic table, cannot be obtained by chemical reduction with carbon at reasonable
temperatures. What procesS Is used to obtain these metals from their ores?
positive
Transcribed Image Text:-1000 Decomposition Rezctions Carbon Reduction Reactions AH AS (kJ) (JK-mol) O 2 Ag,0(s) → 4 Ag(s) + O2(g) +62.2 +132.7 O 2 MgO(s) → 2 Mg(s) + O2(g) +1202.4 +216.7 1000- O 2 AlhO3(s) → 4 Al(s) – 3 02(g) +3351.4 +546.8 O 2 Fe2O3(s) → 4 Fe(s) – 3 O2(g) +1648 4 +5515 O 2 HgO(s) → 2 Hg(t) + 0,(g) +181.7 +286.8 2000- O 2 Cr,03(s) → 4 Cr(s)– 3 0,(g) 2269 4 +548.4 Temperature 3000 300 300 K 2000 Temperature ((K) Clear Graph The metals Mg and Al, like most metals in groups 1A, 2A, and 3A of the periodic table, cannot be obtained by chemical reduction with carbon at reasonable temperatures. What procesS Is used to obtain these metals from their ores? positive
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