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12 Cards in this Set
- Front
- Back
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The reaction of 16.00 g of SO2 (g) burns in excess of oxygen. 9.85 kJ of heatare released. What is ΔH for the following thermochemical equation?
2SO2(g) + O2(g) → 2SO3(g) |
–78.8 kJ
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A 50.0 g sample of acid solution is added to 50.0 g of a base solution in acalorimeter. The temperature of the liquid increases from 18.20 °C to21.30 °C. Calculate q for the neutralization reaction (Specific heat ofsolution = 4.184 J/g °C).
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1.3 kJ
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Given the thermochemical equations and their corresponding enthalpies:
CO(g) + 1/2O2(g) → CO2(g) ΔH = –283.0 kJ N2(g) + O2(g) → 2NO(g) ΔH = 180.6 kJ What is the ΔH for the following reaction? CO(g) + NO(g) → CO2 (g) + 1/2N2 (g) |
–373.3 kJ
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Calculate the enthalpy change if 5.00 mol N2(g) reacts with O2(g) to make NO,using the following thermochemical equation:
N2(g) + O2(g) → 2NO(g) ΔH = +181.8 kJ |
+ 909 kJ
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Calculate the number of moles of hydrogen produced by the reaction ofsodium with water, which resulted to formation of NaOH and H2? In thereaction, 1.3 L gas is collected by water displacement at 26 °C. Theatmospheric pressure is 756 torr. (The partial pressure of water vapor at26 °C is 25 torr.)
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0.051 mol
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Calcium reacts with water to produce Ca(OH)2 and H2. What volume of gas at100 °C and 1.02 atm of pressure is formed from the reaction of 1.00 g ofcalcium with excess water?
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none of these
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What is the partial pressure of He in a flask at a total pressure of 700 torr, ifthe sample contains 10.2 mol Ar and 10.4 mol He?
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353 torr
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Arrange As, Se, Br in the order of increasingly favorable (more negative)electron affinity (i.e., least negative first)?
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As, Se, Br
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How many valence electrons does iodine (I, atomic number 53) atompossess?
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7
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Predict which species in each of the following pairs has the higher firstionization energy
I. Na and Si II. B and Ga iii. K+ and Ca2+ |
none of these
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The ground state electron configuration 1s22s22p63s23p64s23d104p6would be correct for which species listed below?
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Kr
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How many unpaired electrons does Fe3+ have?
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5
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