Which of the following processes are spontaneous? Drag the appropriate items to their respective bins. Spontaneous the reaction of hydrogen gas with oxygen gas to form water vapor at room temperature alignment of iron filings in a magnetic field separating a mixture of N₂ and O₂ into two separate samples: one that is pure N₂ and one that is pure 0₂ the melting of ice cubes at -10 °C and 1 atm pressure the dissolution of HCI (g) in water to form concentrated hydrochloric acid Nonspontaneous Reset Help

Which of the following processes are spontaneous? Drag the appropriate items to their respective bins. Spontaneous the reaction of hydrogen gas with oxygen gas to form water vapor at room temperature alignment of iron filings in a magnetic field separating a mixture of N₂ and O₂ into two separate samples: one that is pure N₂ and one that is pure 0₂ the melting of ice cubes at -10 °C and 1 atm pressure the dissolution of HCI (g) in water to form concentrated hydrochloric acid Nonspontaneous Reset Help

Chemistry

9th Edition

ISBN:9781133611097

Author:Steven S. Zumdahl

Publisher:Steven S. Zumdahl

Chapter17: Spontaneity, Entropy, And Free Energy

Section: Chapter Questions

Problem 4RQ: The free energy change, G, for a process at constant temperature and pressure is related to Suniv...

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Similar questions

Thermite reactions have been used for welding metal parts such as railway rails and in metal refining. One such thermite reaction is Fe2O3(s)+2Al(s)Al2O3(s)+2Fe(s). Is the reaction spontaneous at room temperature under standard conditions? During the reaction, the surroundings absorb 851.8 kJ/mol of heat.
The reaction CO2(g)+H2(g)CO(g)+H2O(g) is not spontaneous at room temperature but becomes spontaneous at a much higher temperature. What can you conclude from this about the signs of H and S , assuming that the enthalpy and entropy changes are not greatly affected by the temperature change? Explain your reasoning.
On the basis of G for each of the following reactions, decide whether the reaction is spontaneous or non-spontaneous as written. Or, if you expect an equilibrium mixture with significant amounts of both reactants and products, say so. a SO2(g)+2H2S(g)3S(s)+2H2O(g);G=91kJ b 2H2O2(aq)O2(g)+2H2O(l);G=211kJ c HCOOH(l)CO2(g)+H2(g);G=119kJ d I2(s)+Br2(l)2IBr(g);G=7.5kJ e NH4Cl(s)NH3(g)+HCl(g);G=92kJ
On the basis of your experience, predict which of the following reactions are spontaneous. (a) CO2(s)CO2(g) at 25°C (b) NaCl(s)NaCl(l) at 25°C (c) 2NaCl(s)2Na(s)+Cl2(g) (d) CO2(g)C(s)+O2(g)
Given that H f for HF(aq) is -320.1 kJ/mol and S for HF(aq) is 88.7 J/mol K, find Ka for HF at 25C.
The free energy change, G, for a process at constant temperature and pressure is related to Suniv and reflects the spontaneity of the process. How is G related to Suniv? When is a process spontaneous? Nonspontaneous? At equilibrium? G is a composite term composed of H, T, and S. What is the G equation? Give the four possible sign combinations for H and S. What temperatures are required for each sign combination to yield a spontaneous process? If G is positive, what does it say about the reverse process? How does the G = H TS equation reduce when at the melting-point temperature of a solid-to-liquid phase change or at the boiling-point temperature of a liquid-to-gas phase change? What is the sign of G for the solid-to-liquid phase change at temperatures above the freezing point? What is the sign of G for the liquid-to-gas phase change at temperatures below the boiling point?
Benzene can be prepared from acetylene. 3C2H2(g)C6H6(g). Determine the equilibrium constant at 25 C and at 850 C. Is the reaction spontaneous at either of these temperatures? Why is all acetylene not found as benzene?
Consider the reaction N2O(g)+NO2(g)3NO(g)K=4.41019 (a) Calculate G for the reaction at 25C. (b) Calculate G f for N2O at 25C.
Under what conditions is N2O3(g)NO(g)+NO2(g) spontaneous?
A reaction has H298=100 kj/mol and S298=250 J/mol K. Is the reaction spontaneous at room temperature? If not, under what temperature conditions will it become spontaneous?
At 1 atm, liquid water is heated above 100C. For this process, which of the following choices (iiv) is correct for Ssurr? S? Suniv? Explain each answer. i. greater than zero ii. less than zero iii. equal to zero iv. cannot be determined
In the thermodynamic definition of a spontaneous process, why is it important that the phrase “continuous intervention” be used rather than just “intervention?”

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