(a)
Interpretation:
The energy for the vaporization of
Concept Introduction:
Enthalpy
The value of heat formed in a reaction
If the value obtained for
From its given mass is,
(b)
Interpretation:
The energy released for the condensation of
Concept Introduction:
Enthalpy
The value of heat formed in a reaction
If the value obtained for
From its given mass is,
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Fundamentals of General, Organic, and Biological Chemistry - With Access
- For the reaction A → B at 298 K, the change in enthalpy is −7 kJ · mol−1and the change in entropy is −25 J · K−1 · mol−1. Is the reaction spontaneous? If not, should the temperature be increased or decreased to make the reaction spontaneous?arrow_forwardFor ferrocene (C10H10Fe) the enthalpy of sublimation is 73.2 kJ/mol and the entropy of sublimation is 243 J/mol.K. What is the sublimation temperature of ferrocene in degrees Celsius?arrow_forwardThe reaction CO (g) + H2O(g) CO2(g) 2 + H2(g) has ΔH = -41 kJ/mol. Does the amount of H2 in an equilibrium mixture increase or decrease when the temperature is decreased?arrow_forward
- The following reaction plays a key role in the destruction of ozone in the atmosphere: Cl(g)+ O3 (g)-> ClO(g)+O2 (g) Given the standard molar entropies (S°) below, calculate the ΔS for this reaction. S°C1O = 218.9 J/mol*K S°O3 = 238.8 J/mol*K S°Cl = 165.2 J/mol*K S°O2= 205.0 J/mol*K _______ J/K = ΔSarrow_forwardCalculate the Keq (report up to two decimal places and do not use scientific notation) for the net reaction at 298.15K. (see attached image) Note: R = 1.98 x 10 -3 kcal/mol-Karrow_forwardIf you measured the rate of reaction at 20°C to be 1.11 x 10-5 M/s when using 0.080 M I1- and 0.040 M S2O82-. Approximately how long will the reaction take if you were to increase the temperature to 30 °C?arrow_forward
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- Ethylene oxide is produced industrially from the reaction of ethylene with oxygen at atmospheric pressure and 277 oC, in the presence of silver catalyst.C2H4(g) + O2(g) → C2H4O(g) (unbalanced)Assuming 100 % yield, how many kg of ethylene oxide can be produced from 34600 L of a mixture containing ethylene and oxygen in 1:1 molar ratio?arrow_forwardThe difference in chemical potential of a particular substance between two regions of a system is −8.3 kJ mol−1. By how much does the Gibbs energy change when 0.15 mmol of that substance is transferred from one region to the other?arrow_forwardFor the following reaction 3 experiments have been run and the data collected is in the following table @ 35 degrees Celsius 2 NO2F(g) ---> 2 NO2(g) + F2(g) Experiment [NO2F], M Rates, M/s 1 0.263 0.168 2 0.349 0.223 3 0.421 0.269 a) How long will it take for a 65% NO2F solution to become a 31% NO2F solution @35 degrees Celsius?(Hint: Use mass ratios and assume ~1g/ml for density of solutions to get you started) b) It has been determined that at 75 degrees Celsius the rate constant is 1.046 s-1. Calculate the activation energy for the decomposition of NO2F. [Hint: ]ln?1?2=?a?(1?2―1?1) c) What is the half-life of a 35% solution of NO2F @ 35 degrees Celsius?arrow_forward
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