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Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Question
Determine
Δ
ngas for each of the following reactions:
(a) MgCO3(s)
→
MgO(s) + CO2(g)
mol
(b) 2 H2(g) + O2(g)
→
2 H2O(l)
mol
(c) HNO3(l) + ClF(g)
→
ClONO2(g) + HF(g)
mol
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- What is the enthalpy change when 2.00 mol of oxygen (O2) react? C12H22O11(s) + 12 O2(g) → 12 CO2(g) + 11 H2O(l) ΔH = -5644 kJarrow_forwardConsider these reactions: Reaction 1: H2(g) + Cl2(g) 2HCI(g) AH = –184.6 kJ Reaction 2: 20F2(g) O2(8) + 2 F2(g) AH: -49.4 kJ Reaction 3: N2(8) + 202(8) - 2NO2(g) ΔΗ+66.4 kJarrow_forwardWhat is the average bond energy in CO2? CO2(g) ΔH°f, = –393.5 kJ mol–1 CO(g) ΔH°f, = –110.5 kJ mol–1 C(g) ΔH°f, = +715 kJ mol–1 CO32–(aq) ΔH°f, = –676.3 kJ mol–1 O(g) ΔH°f, = +249.0 kJ mol–1 Question 5 options: 207 kJ mol–1 1607 kJ mol–1 804 kJ mol–1arrow_forward
- There are two steps in the usual industrial preparation of acrylic acid, the immediate precursor of several useful plastics. In the first step, calcium carbide (CaC,) and water react to form acetylene (C,H,) and calcium hydroxide: CaC, (s) + 2H,0(g) - C,H,(g) + Ca(OH), (s) In the second step, acetylene (C,H,), carbon dioxide and water react to form acrylic acid (CH,CHCO,H): 6C,H, (g) 3co,(g) + 4H,0(g) 5 CH, CHCO,H (g) Suppose the yield of the first step is 68.% and the yield of the second step is 66.%. Calculate the mass of calcium carbide required to make 10.0 kg of acrylic acid. Be sure your answer has a unit symbol, if needed, and is rounded to the correct number of significant digits.arrow_forwardGiven the following reactions Fe2O3 (s) + 3CO (s) → 2Fe (s) + 3CO2 (g) ΔH = –28.0 kJ mol–1 3Fe (s) + 4CO2(s) → 4CO (g) + Fe3O4(s) ΔH = +12.5 kJ mol–1 Determine the enthalpy of the following reaction in kJ mol–1 3Fe2O3 (s) + CO (g) → CO2 (g) + 2Fe3O4 (s) Select one: a. 40.5 b. +109 c. –109 d. –59.0 e. –15.5arrow_forwardClassify the substances below as reactants or products and state their state of 2NaHCO3 (s) → Na,CO3 (s) + H20 (1) + CO2 (g) matter:arrow_forward
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