Deterioration of buildings, bridges, and other structures
through the rusting of iron costs millions of dollars every day.
Although the actual process also requires water, a simplified
equation (with rust shown as Fe2O3)
is:
| 4 Fe(s) + 3
O2(g)
→ 2 Fe2O3(s) |
Δ Hrxn = −1.65× 103 kJ |
(a) What is the ΔHrxn when 0.250 kg of iron
rusts?
×
10
kJ
(b) How much rust forms when 1.90
×
103 kJ of heat is released?
×
10
g Fe2O3
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Deterioration of buildings, bridges, and other structures through the rusting of iron costs millions of dollars...