The following thermochemical equation is for the reaction of iron(s) with hydrochloric acid(aq) to form iron(II) chloride(s) and hydrogen(g). Fe(s) + 2HCl(aq) FeCl2(s) + H2(g) H = -7.40 kJ When 16.0 grams of iron(s) react with excess hydrochloric acid(aq), kJ of energy are
The following thermochemical equation is for the reaction of iron(s) with hydrochloric acid(aq) to form iron(II) chloride(s) and hydrogen(g). Fe(s) + 2HCl(aq) FeCl2(s) + H2(g) H = -7.40 kJ When 16.0 grams of iron(s) react with excess hydrochloric acid(aq), kJ of energy are
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Chapter6: Thermochemisty
Section: Chapter Questions
Problem 6.144QP: A piece of iron was heated to 95.4C and dropped into a constant-pressure calorimeter containing 284...
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The following thermochemical equation is for the reaction of iron(s) with hydrochloric acid(aq) to form iron(II) chloride(s) and hydrogen(g).
Fe(s)
- +
2HCl(aq) FeCl2(s)
- +
H2(g)
- H =
-7.40
- kJ
When 16.0 grams of iron(s) react with excess hydrochloric acid(aq), kJ of energy are
.
Hint: An amount of energy is expressed as a positive number. The sign of ΔH in the thermochemical equation indicates whether the energy is absorbed or evolved.
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