Unit 3: Predicting the Products

Question 1

Water and non-metal oxide reaction

Answer 1

Acid

Question 2

Water and metal oxide reaction

Answer 2

Base

Question 3

Acid and metal react

Answer 3

H2 (gas), salt produced

Question 4

Acid and metal carbonate react

Answer 4

H2O, CO2, salt produced

Question 5

Neutralization reaction (acid and base)

Answer 5

Salt and water produced

Question 6

Complete combustion reaction

Answer 6

CO2, H2O produced

Question 7

Incomplete combustion reaction

Answer 7

CO2,H2O, C, CO produced

Question 8

Na

Na2O + H2O ->

Answer 8

Na2O + H2O -> 2NaOH

Question 9

Na2CO3 + HCl ->

Answer 9

Na2CO3 + 2HCl -> H2O + CO2 + 2NaCl

Question 10

Hydrochloric acid is neutralized by ammonia

Answer 10

HCl (aq) + NH3 -> NH4Cl (aq)

Question 11

CaCO3 (s) ->

Answer 11

CaCO3 (s) -> CaO + CO2

Question 12

H3PO4(aq) + K2CO3 ->

Answer 12

2H3PO4(aq) + 3K2CO3 -> 3CO2(g) + 2K3PO4(aq) + 3H2O(l)

Question 13

Redox - Ni2(SO4)3

Answer 13

Ni2 S -24
+6 +18 -8
+3 +6 -2

Question 14

Define oxidation, reduction

Answer 14

Oxidation: a reaction in which a reactant undergoes a loss of electrons
Reduction: a reaction in which a reactant undergoes a gain of electrons

Question 15

Define oxidizing agent, reducing agent

Answer 15

Oxidizing agent: the reactant that causes oxidation; the substance that gains the electrons in a reaction
Reducing agent: the reactant that causes reduction; substance that loses the electrons in a reaction