10. The element cesium freezes at 28.4°C, and its molar enthalpy of fusion is AHfusion = 2.09 kJ/mol. a. When molten cesium solidifies at its normal melting point, is AS positive or negative? b. Calculate the value of AS when 15.0 g of molten cesium solidifies at 28.4°C.

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Chapter1: Chemical Foundations
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Number 10
Calculate AS for each of the chemical reactions and compare the value to your predictions from #1.
a. Mg(s) + Cl₂(g) → MgCl₂ (s)
b. N₂(g) + 3H₂(g) → 2NH3(g)
C. 2H₂0 (1)→ 2H₂(g) + O₂(g)
d. 2KCIO3(s) → 2KCl(s) + 30₂ (g)
10. The element cesium freezes at 28.4°C, and its molar enthalpy of fusion is AHfusion = 2.09 kJ/mol.
When molten cesium solidifies at its normal melting point, is AS positive or negative?
9.
a.
b. Calculate the value of AS when 15.0 g of molten cesium solidifies at 28.4°C.
11. Given the following thermodynamic values, determine how temperature affects the spontaneity of the reaction. Is the
reaction enthalpy driven, entropy driven, both, or neither?
a. ΔΗ = +327
AS +127.
kJ
mol
b. AH = -187.
mol
J
molk
J
molk
AS-298-
Transcribed Image Text:Calculate AS for each of the chemical reactions and compare the value to your predictions from #1. a. Mg(s) + Cl₂(g) → MgCl₂ (s) b. N₂(g) + 3H₂(g) → 2NH3(g) C. 2H₂0 (1)→ 2H₂(g) + O₂(g) d. 2KCIO3(s) → 2KCl(s) + 30₂ (g) 10. The element cesium freezes at 28.4°C, and its molar enthalpy of fusion is AHfusion = 2.09 kJ/mol. When molten cesium solidifies at its normal melting point, is AS positive or negative? 9. a. b. Calculate the value of AS when 15.0 g of molten cesium solidifies at 28.4°C. 11. Given the following thermodynamic values, determine how temperature affects the spontaneity of the reaction. Is the reaction enthalpy driven, entropy driven, both, or neither? a. ΔΗ = +327 AS +127. kJ mol b. AH = -187. mol J molk J molk AS-298-
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