Chemistry
Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Mole Concept
Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can b…
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What are the values of A-D that balance the following equation? (A)H2S+ (B)SO2 produces (C)Cs + (D)H20 O a. A = 2, B = 1, C = 3, D = 2 O b. A = 2, B = 2, C = 4, D = 2 1, C = 3, D = 3 1, C = 4, D = 2 O c. A = 2, B = O d. A = 3, B = Given the following two reactions: C(s) + O2(g) - CO2(g); AH = -393.5 kJ, 2Fe(s) + 3/2 02 (g) - Fe2O3(s): AH = -824.2 kJ. Calculate the enthalpy change for 2Fe2O3(s) + 3C(s) - 4Fe(s) + 3CO2(g) 0 а. Ob. O c. O d. 467.9 kJ -467.9 kJ -430.7 kJ 430.7 kJ Given the reaction in a basic solution: MnO4-1 + C204 2- produces MnO2 + CO3 2-, how many water molecules and H ion were added both in reduction and oxidations reactions? Oa. 2H20 and 5H ion O b. 2H20 and 4H ion Oc. 2H20 and 2H ion O d. 2H20 and 3H ion Given the reaction in a basic solution: MnO4-1+ C204 2- produces MnO2 + CO3 2-what are the correct coefficients of the reactants and products for in the balanced redox equation? O a. 2, 3, 4, 2, 6, 2 O b. 2, 6, 2, 4, 3, 2 Oc. 2, 4, 3, 2, 3, 2 O d. 2, 6, 4, 2, 3, 2 What are the values of A-F that balance the following equation? (A)CN- + (B)Ag + (C)02 produces (E)Ag(CN)2 -1 + (F)H20 O a. A = 8, B = 4, C = 1, D = 4, E = 4, F = 2 O b. A = 8, B = 4, C = 1, D = 2, E = 4, F = 1 Oc. A = 2, B = 4, C = 1, D = 4, E = 1, F = 2 O d. A= 6, B = 4, C = 1, D = 4, E = 3, F = 2 The reaction, 4AI (s)reacts to 302 (g) produces 2A1203 (s); AH = -3351 kJ is. therefore heat is by the reaction. O a. Exothermic, absorbed O b. Exothermic, released Oc. Endothermic, absorbed Od. Endothermic, released and
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Transcribed Image Text:What are the values of A-D that balance the following equation? (A)H2S+ (B)SO2 produces (C)Cs + (D)H20 O a. A = 2, B = 1, C = 3, D = 2 O b. A = 2, B = 2, C = 4, D = 2 1, C = 3, D = 3 1, C = 4, D = 2 O c. A = 2, B = O d. A = 3, B = Given the following two reactions: C(s) + O2(g) - CO2(g); AH = -393.5 kJ, 2Fe(s) + 3/2 02 (g) - Fe2O3(s): AH = -824.2 kJ. Calculate the enthalpy change for 2Fe2O3(s) + 3C(s) - 4Fe(s) + 3CO2(g) 0 а. Ob. O c. O d. 467.9 kJ -467.9 kJ -430.7 kJ 430.7 kJ Given the reaction in a basic solution: MnO4-1 + C204 2- produces MnO2 + CO3 2-, how many water molecules and H ion were added both in reduction and oxidations reactions? Oa. 2H20 and 5H ion O b. 2H20 and 4H ion Oc. 2H20 and 2H ion O d. 2H20 and 3H ion Given the reaction in a basic solution: MnO4-1+ C204 2- produces MnO2 + CO3 2-what are the correct coefficients of the reactants and products for in the balanced redox equation? O a. 2, 3, 4, 2, 6, 2 O b. 2, 6, 2, 4, 3, 2 Oc. 2, 4, 3, 2, 3, 2 O d. 2, 6, 4, 2, 3, 2 What are the values of A-F that balance the following equation? (A)CN- + (B)Ag + (C)02 produces (E)Ag(CN)2 -1 + (F)H20 O a. A = 8, B = 4, C = 1, D = 4, E = 4, F = 2 O b. A = 8, B = 4, C = 1, D = 2, E = 4, F = 1 Oc. A = 2, B = 4, C = 1, D = 4, E = 1, F = 2 O d. A= 6, B = 4, C = 1, D = 4, E = 3, F = 2 The reaction, 4AI (s)reacts to 302 (g) produces 2A1203 (s); AH = -3351 kJ is. therefore heat is by the reaction. O a. Exothermic, absorbed O b. Exothermic, released Oc. Endothermic, absorbed Od. Endothermic, released and
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