Ants release formic acid (HCOOH) when they bite. Use the data in Table 7.2 and the standard
Question:
Ants release formic acid (HCOOH) when they bite. Use the data in Table 7.2 and the standard enthalpy of combustion for formic acid (ΔrH° = -255 kJ/mol) to calculate the standard enthalpy of formation for formic acid.
Table 7.2
Transcribed Image Text:
TABLE 7.2 Some Standard Molar Enthalpies of Formation, AH° at 298.15 K Substance CO(g) CO₂(g) CH4(8) C₂H₂(g) C₂H4(8) C₂H6(g) C3H8(g) C4H10(g) CH₂OH(1) C₂H5OH(1) HF(g) HCl(g) kJ/mola -110.5 -393.5 -74.81 226.7 52.26 -84.68 -103.8 -125.6 -238.7 -277.7 -271.1 -92.31 Substance HBr(g) HI(g) H₂O(g) H₂O(1) H₂S(g) NH3(g) NO(g) N₂O(g) NO₂(g) N₂O4(g) SO₂(g) SO3(g) kJ/mola -36.40 26.48 -241.8 -285.8 -20.63 -46.11 90.25 82.05 33.18 9.16 -296.8 -395.7
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Related Book For
General Chemistry Principles And Modern Applications
ISBN: 9780132931281
11th Edition
Authors: Ralph Petrucci, Jeffry Madura, F. Herring, Carey Bissonnette
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