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Question 10 4 pts Which process has AS > 0 (increase S)? A) H2O(g) + H2O(1)...
37. Which of the following equilibria would not be affected by pressure changes at constant temperature? a. CO2(g) + H2(g) = CO(g) + H2O(g) b.CO(g) + 302(g) =CO2(8) c. 2Hg(1) + O2(g) = 2HgO(s) d. 2H2(g) + O2(g) = 2H2O(1) e. CaCO3(s) CaO(s) + CO2(g)
Question 18 4 pts Which, if any, of the following processes is spontaneous under the specified conditions? A) H200) H2O(s) at 25°C B) CO2(s) + CO2(s) at 25°C C) 2H2O(g) + 2H2(g) + O2(g) at 25°C D) C(graphite)C(diamond) at 25°C and 1 atm ОА Ос OB OD Ante
Question 16 4 pts Which changes is endothermic? A) CO2(g) → CO2(s) B) CO2(g) CO2(0) C) CO2(s) - CO2(g) D) CO2(0) CO2 (s) - → Ос ОА OB OD 4 pts Question 17
Question 32 2 pts Which response includes all of the following that are single displacement reactions, and no other reactions? I. BaO(s) + SO2 (g) -BaSO3(s) II. 2Rb(s) + 2H2O(1) ► 2RbOH(aq) + H2(9) III. 2Hl(aq) + Ca(OH)2(aq) → Cal2(aq) + 2H2O(1) 2HgO(s) → 2Hg() + O2(9) IV. O II, II and IV O I, II, and IV O II Oll and IV I and IV
Which of the following processes has a negative AS? A) CaCO3(s) → Cao(s) + CO2(g) B) H2O(g) → H2O(s) C) CO2(s) + CO2(g) D) C6H1206(s) → C6H1206(aq) E) AS cannot be negative
Consider the following data: DeltaH (kj) Ca(s) + 2C(graphite)----> CaC2 (s) -62.8 Ca(s) + 1/2 O2 (g) -----> CaO (s) -635.5 CaO (s) + H2O(l) ----->Ca(OH)2 (aq) -653.1 C2H2(g)+ 5/2 O2(g)---->2CO2(g)+H2O(l) -1300 C(graphite)+ O2(g)---->CO2(g) -393.51 Use Hess' law to find the change in enthalpy at 25oC for this equation: CaC2(s)+2H2O(l)-----> Ca(OH)2 (aq)+ C2H2(g)
4. Consider the reaction of aluminum and oxygen: Al(s) + O2(g) Al2O3(s) (i). Which is the limiting reactant if we start with 30.0 g Al and 30.0 g O2? (ii). What is the Theoretical Yield for the reaction? (iii). If 25.85 g of Al2O3 was collected at the completion of the reaction (actual yield), what is the % yield for the reaction? 5. (a). A 1.506-g sample of limestone-containing material gave 0.558 g of...
For which reaction will Kp = Kc? C(s) + O2(g) ⇌ CO2(g) 2 H2O(l) ⇌ 2 H2(g) + O2(g) CaCO3(s) ⇌ CaO(s) + CO2(g) H2CO3(s) ⇌ H2O(l) + CO2(g) 2 HgO(s) ⇌ Hg(l) + O2(g)
2. (10 pts) Given the following data Ca(s)2C(graphite)CaC2(s) -62.8 kJ OH635.5 Ca(s)1/202(g) CaO(s) kJ CaO(s)H20()- Ca(OH)2(aq) OH 653.1 kJ 2CO2(g)H2O(l OH1300 C2H2(g)5/202(g) kJ C(graphite) O2(g)CO2(g) H= -393.5 kJ calculateH for the reaction (show your work for full credit) CaC2(s)+ 2H20()- Ca(OH)2(aq) CH2(g)
1) Which of the following processes would be expected to have the largest increase in ?Srxn per mole of benzene? a) C6H6(l) + Cl2(g) ? C6H5Cl(l) + HCl(g) b) C6H6(l) + 15/2 O2(g) ? 6CO2(g) + 3H2O(g) c) C6H6(s) ? C6H6(g) d) 6H6(s) ? C6H6(l) e) C6H6(l) + 9/2 O2(g) ? 6CO(g) + 3H2O(g) 2) The heat of fusion of acetic acid is 11.5 kJ/mol. Its melting point is 16.6 oC. The change in entropy for the melting of acetic acid in...