Chemical Reaction Study Guide

1. Which reaction represents burning sulfur in the presence of oxygen to produce a blue flame of sulfur dioxide?  

• S + O2    🡪   SO2

• 1. S2 + O    🡪   SO

• 1. S + O     🡪   SO2

• 1. S2 + O2   🡪   SO2

1. What is the mass of product C when the mass of A is 52.8 grams and the mass of B is 28.5 grams? The reaction is A  🡪   B + C.  

• 1. 24.3 grams

• 81.3 grams

• 28.5 grams

• 1. 52.8 grams

Match the word equation below to the correctly balanced symbol equation:  Aluminum and water react to form aluminum hydroxide and hydrogen      

• 1. 2Al(OH)3  +  3H2 🡪 2Al  +  6H2O

• 1. 2Al +   6H2O 🡪  2Al(OH)3 +  3H2

• 1. 2Al +   5H2O 🡪  2Al(OH)3    +  5H2

• 2Al +  6H2O   🡪 2Al(OH)3  +  6H2

5. Which coefficients balance the equation below?
   ___Fe2O3     🡪    ___Fe     +   ___O2

• 1. 2, 3, 3

• 1. 3, 4, 2

• 1. 1, 2, 1

• 2, 4, 3

6. Which of the following ratios represent the following reaction?
   Fe3O4 + 4 CO 4 CO2 + 3 Fe

• 1. 1 mol Fe3O4 : 1 mol CO

• 1. 3 mol Fe3O4 : 1 mol Fe

• 1. 1 mol Fe3O4 : 4 mol CO2

• 1. 2 mol Fe3O4 : 1 mol Fe3O4

6. What will be the ratio of the balanced reaction?
   __NaHCO3   Na2CO3 + H2O + __CO2

• 1. 6 mol NaHCO3: 3 mol Na2CO3 : 3 mol H2O : 3 mol CO2

• 2 mol NaHCO3: 1 mol Na2CO3 : 3 mol H2O : 3 mol CO2

• 1. 6 mol NaHCO3: 2 mol Na2CO3 : 2 mol H2O : 2 mol CO2

• 1. 2 mol NaHCO3: 1 mol Na2CO3 : 1 mol H2O : 1 mol CO2

 Which of the following equations is a double replacement reaction?

• 1. 2 H2 + O2  → 2 H2O

• 1. Mg + 2 AgNO3  → Mg(NO3)2 + 2 Ag

• NaCl + AgNO3  → NaNO3 + AgCl

• 1. C2H4 + O2 → CO2 + H2O + energy

6. A chemical change in which a particle gains one or more electrons is classified as:

• 1. ionization

• 1. reduction

• 1. oxidation

• 1. conduction

6. Which of the following equations represents oxidation?

• 1. X2+ → X2-

• 1. X → X2- + 2e-

• 1. X + 2e- → X2+

• 1. X → X2+ + 2e-

6. The following generic reaction will not take place, why:  X + YNO3 🡪 no reaction

• 1. Y is more reactive than X

• 1. X is more reactive than Y

• 1. X is more reactive than NO3

• NO3 is more reactive than X