Question

D) All of 1, 2, and 3 E) None of 1, 2, and 3 27) What type of a reaction occurs when notassium metal reacts w A) precipitation is when potassium metal reacts with fluorine gas B acid-base neutralization 26 - 2KE C) oxidation-reduction D) gas evolution E) no reaction 28) Identify the oxidation-reduction reactions among the following: Zn(s) + Cu2+(aq) → Zn2+(aq) + Cu(s) 10 ** A) 1 and 2 only B) 1 and 3 only C) 2 and 3 only DYAll of 1, 2, and 3 E) None of 1, 2, and 3 29) Which of the following statements about redox reactions is FALSE? A) Oxidation is the loss of electrons. B) Reduction is the gain of electrons. (C A reaction can result in either oxidation or reduction, not both. D) A reaction involving elemental oxygen is a redox reaction. E) All of the above statement are true. 30) What type of reaction is the generic equation A + BC AC +B? A) synthesis/combination A+B A B) decomposition ABA TB SY single displacement ATBC ADIBC. A + CD

Answer 1

(27) Reduction (decrease in o.n) 2KF 2K + E OON oo oxidation Cincrease in ON) Reduction. (28) Zus) et con +2 zot (0) & culs) + 2 0 ON oxidation (29) (c) false A reaction com result in either reduction, not both. oxidation or Reduction and oxidation is a complete phenomena it happen both at the same tione whenever there is going oxidation it means reduction is also taking place. oxidation Reduction is is loss gain of of electons (oon is increasing) elechous. (oin is decreasing)