The value of \u0394 G at 1000C for the formation of calcium chloride from its

# The value of δ g at 1000c for the formation of

This preview shows page 4 - 6 out of 8 pages.

21) The value of ΔG° at 100.0°C for the formation of calcium chloride from its constituent elements: Ca(s) + Cl2(g) CaCl2(s) is ________ kJ/mol. At 25.0°C for this reaction, ΔH° is -795.8 kJ/mol, ΔG° is -748.1 kJ/mol, and Δis -159.8 J/K. A) -855.4 B) -736.1 C) 5.88 × 104 D) -779.8 E) 1.52 × 10422) For a given reaction, ΔH = -19.9 kJ/mol and ΔS = -55.5 J/Kmol. The reaction will have ΔG = 0 at ________ K. Assume that ΔH and ΔS do not vary with temperature. 23) Calculate ΔGrxnat 298 K under the conditions shown below for the following reaction. SO3(g) + H2O(g) H2SO4(l) ΔG°= -90.5 kJ P(SO3) = 0.20 atm, P(H2O) = 0.88 atm 24) What element is being reduced in the following redox reaction? MnO4(aq) + H2C2O4(aq) Mn2+(aq) + CO2(g) 25) What element is being oxidized in the following redox reaction? MnO4(aq) + H2C2O4(aq) Mn2+(aq) + CO2(g) A) C B) O C) Mn D) H 26) What element is being reduced in the following redox reaction? C3H8O2(aq) + K2Cr2O7(aq) C3H4O4(aq) + Cr+3(aq) 27) Balance the following redox reaction if it occurs in acidic solution. What are the coefficients in front of H2C2O4 and H2O in the balanced reaction? MnO4(aq) + H2C2O4(aq) Mn2+(aq) + CO2(g) 28) Balance the following reaction in KOH. What are the coefficients in front of C3H8O2and KMnO4in the balanced reaction? C3H8O2(aq) + KMnO4(aq) C3H2O4K2(aq) + MnO2(aq)
29) Identify the location of oxidation in an electrochemical cell. A) the anode B) the cathode C) the electrode D) the salt bridge E) the socket 30) Identify the location of reduction in an electrochemical cell. 31) Define a salt bridge. 32) Determine the cell notation for the redox reaction given below. 3 Cl2(g) + 2 Fe(s) 6 Cl(aq) + 2 Fe3+(aq) A) Cl2(g) Cl(aq) Pt Fe(s) Fe3+(aq) B) Cl(aq) Cl2(g) Pt Fe3+(aq)Fe(s) C) Fe3+(aq) Fe(s) Cl(aq) Cl2(g) Pt D) Fe(s) Cl2(g) Fe3+(aq) Cl(aq) Pt E) Fe(s) Fe3+(aq) Cl2(g) Cl(aq) Pt

#### You've reached the end of your free preview.

Want to read all 8 pages?