c) reduced d) the oxidizing agent e) more than one of these 94. Which of the following reactions does involve oxidation-reduction? not a) CH4 + 3O2 2H2O + CO2  b) Zn + 2HCl ZnCl2 + H2  c) 2Na + 2H2O + H2  d) MnO2 + 4HCl  Cl2 + 2H2O + MnCl2 e) All are oxidation-reduction reactions. 95. of the following are oxidation-reduction reactions? I. PCl3 + Cl2 PCl5  II. Cu + 2AgNO3 Cu(NO3)2 + 2Ag  III. CO2 + 2LiOH Li2CO3 + H2O  IV. FeCl2 + 2NaOH Fe(OH)2 + 2NaCl  a) III b) IV c) I and II d) I, II, and III e) I, II, III, and IV 96. Which of the following statements is(are) Oxidation and reduction true? a) cannot occur independently of each other b) accompany all chemical changes c) describe the loss and gain of electron(s), respectively d) result in a change in the oxidation states of the species involved e) A, C, and D 97. In the reaction Zn + H2SO4 ZnSO4 + H2, which, if any, element is oxidized?  a) zinc b) hydrogen c) sulfur d) oxygen e) none of these 98. In the following reaction, which species is oxidized? 8NaI + 5H2SO4 4I2 + H2S + 4Na2SO4 + 4H2O  a) sodium b) iodine c) sulfur d) hydrogen e) oxygen 99. How many of the following are oxidation-reduction reactions? NaOH + HCl NaCl + H2O  Cu + 2AgNO3 + Cu(NO3)2 2Ag Mg(OH)2 MgO + H2O  N2 + 3H2 2NH3 
c) reduced d) the oxidizing agent e) more than one of these 94. Which of the following reactions does not involve oxidation-reduction? a) CH4 + 3O2  2H2O + CO2 b) Zn + 2HCl  ZnCl2 + H2 c) 2Na + 2H2O  + H2 d) MnO2 + 4HCl  Cl2 + 2H2O + MnCl2 e) All are oxidation-reduction reactions. 95. of the following are oxidation-reduction reactions? I. PCl3 + Cl2  PCl5 II. Cu + 2AgNO3  Cu(NO3)2 + 2Ag III. CO2 + 2LiOH  Li2CO3 + H2O IV. FeCl2 + 2NaOH  Fe(OH)2 + 2NaCl a) III b) IV c) I and II d) I, II, and III e) I, II, III, and IV 96. Which of the following statements is(are) true? Oxidation and reduction a) cannot occur independently of each other b) accompany all chemical changes c) describe the loss and gain of electron(s), respectively d) result in a change in the oxidation states of the species involved e) A, C, and D 97. In the reaction Zn + H2SO4  ZnSO4 + H2, which, if any, element is oxidized? a) zinc b) hydrogen c) sulfur d) oxygen e) none of these 98. In the following reaction, which species is oxidized? 8NaI + 5H2SO4  4I2 + H2S + 4Na2SO4 + 4H2O a) sodium b) iodine c) sulfur d) hydrogen e) oxygen 99. How many of the following are oxidation-reduction reactions? NaOH + HCl  NaCl + H2O Cu + 2AgNO3 2Ag + Cu(NO3)2 Mg(OH)2  MgO + H2O N2 + 3H2  2NH3
Redox%20Review%20Q.docx