Basic Applications

EXERCISE 7 Single Displacement Reactions

Given the reactions below, answer the following questions:

(1) 2Fe + 6HCl ---> 2FeCl3 + 3H2
List the symbol of the element being oxidized:
How many electrons are lost by each oxidized atom?

(2) Cu + 2AgNO3 ---> Cu(NO3)2 + 2Ag
List the symbol of the element being reduced:
How many electrons are gained by each reduced atom?

(3) Mg + 2H2O ---> Mg(OH)2 + H2
List the symbol of the element being reduced:
How many electrons are lost by the oxidized atom?