Indicate whether the reaction is exothermic or endothermicCs2() + 3CI2(g) → CCI4() + S2CI2() AH° = - 112k)

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Answered: Indicate whether the reaction is…

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter6: Covalent Bonding

Section: Chapter Questions

Problem 34QRT: Estimate ΔrH° for forming 2 mol ammonia from molecular nitrogen and molecular hydrogen. Is this...

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When 7.11 g NH4NO3 is added to 100 mL water, the temperature of the calorimeter contents decreases from 22.1 C to 17.1 C. Assuming that the mixture has the same specific heat as water and a mass of 107 g, calculate the heat q. Is the dissolution of ammonium nitrate exothermic or endothermic?
When a mixture of hydrogen and bromine is maintained at normal atmospheric pressure and heated above 200. °C in a closed container, the hydrogen and bromine react to form hydrogen bromide and a gas-phase equilibrium is established. Write a balanced chemical equation for the equilibrium reaction. Use bond enthalpies from Table 6.2 ( Sec. 6-6b) to estimate the enthalpy change for the reaction. Based on your answers to parts (a) and (b), which is more important in determining the position of this equilibrium, the entropy effect or the energy effect? In which direction will the equilibrium shift as the temperature increases above 200. °C? Explain. Suppose that the pressure were increased to triple its initial value. In which direction would the equilibrium shift? Why is the equilibrium not established at room temperature?
9.52 Write the formation reaction for each of the following substances. (a) CH4(g) , (b) C3H(l) , (c) HCI(g), (d) C6H12O6(s) , (e) NaF(s)
Estimate ΔrH° for forming 2 mol ammonia from molecular nitrogen and molecular hydrogen. Is this reaction exothermic or endothermic?
9.96 Most first aid "cold packs" are based on the endothermic dissolution of ammonium nitrate in water: NH4NO3(s)NH4+(aq)+NO3(aq) H= 25.69 kJ A particular cold pack contains 50.0 g of NH4NO3 and 125.0 g of water. When the pack is squeezed, the NH4NO3dissolves in the water. If the pack and its contents are initially at 24.0°C, what is the lowest temperature that this bag could reach? (Assume that the ammonium nitrate solution has a specific heat of 4.25J g-l K-l, and that the heat capacity of the bag itself is small enough to be neglected.)
7-69 Pure carbon exists is several forms, two of which are diamond and graphite. The conversion of the diamond form to the graphite form is exothermic to a very slight extent. How is it that jewelers can advertise "Diamonds are forever"?
Determine rxnH 25 C for the following reaction: NO g O2 g NO2 g This reaction is a major participant in the formation of smog.
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Fe3+(aq) + SCN–(aq) <=> FeSCN2+(aq) Is the reaction exothermic or endothermic as written? Explain.
Which of the following reactions is most likely to be exothermic?(a) F2(g) → 2 F(g) (b) 2 Cl(g) → Cl2(g) (c) Cu(s) → Cu(l) (d) CBr4(g) → C(g) + 4 Br(g) (e) CO(g) → C(g) + O(g)
The reaction 180 kJ + N2 (g) + O2 (g) → 2NO is __________, and therefore heat is __________ by the reaction. Group of answer choices exothermic, absorbed exothermic, released endothermic, absorbed endothermic, released thermoneutral, neither released nor absorbed
When sodium chloride (NaCl) dissolves, it absorbs 3.9 kJ/mol. What energy diagram would accurately represent the change in enthalpy for the reaction? NaCl (s) ⟶ Na+(aq) + Cl-(aq)

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Indicate whether the reaction is exothermic or endothermic Cs2() + 3C12(g) → CCI4() + S2C1½() AH° = - 112k)