Match the following reactions with the reaction type. You may use each type more than once.

1) 2HgO (s) → 2Hg (l) + O2 (g)

2) KCl (aq) + AgNO3 (aq) → AgCl (s) + KNO3 (aq)

3) 2Na (s) + H2 (g) → 2NaH (s)

4) Mg (OH) 2 (aq) + 2HNO2 (aq) → Mg (NO2) 2 (aq) + 2 H2O (l)

5) Ca (s) + 2AgNO3 (aq) → Ca (NO3) 2 (aq) + Ag (s)

6) Al2O3 (s) + H2SO4 (aq) → Al2 (SO4) 3 (aq) + H2O (l)

a) synthesis

b) decomposition

c) single replacement

d) double replacement

e) combustion

1) Decomposition

2) Double-replacement reaction

3) synthesis

4) Double-replacement reaction

5) single-replacement reaction

6) Double-replacement reaction

Explanation:

Step 1: Data given

Synthesis: This is a reaction where two or more reactants will combine to form a new, single product. This is occurs when two or more reactants combine to form a single product. This can be shown with the following equation.

A + B → C

A and B are the reactants to form a new product C

Decomposition: This is a reaction where 1 (more complex) compound will be broken down into 2 or more (more simple) products.

This can be shown by the following equation:

AB → A + B

A single replacement: This is a reaction where one element wil be replaced by another element in the same compound. This can be shown by the following equation:

A + BC → B + AC

Here is the elemnt B in the compound BC, replaced by the element A, to form a new compound AC

A double-replacement: This is a reaction where the positive and negative ions of two ionic compounds will be exchanged and 2 new compounds willbe formed. This can be shown by the following equation:

AB+CD→AD+BC

A combustion reaction requires oxygen gas (O2) to produce the products CO2 and H2O

Step 2:

1) 2HgO (s) → 2Hg (l) + O2 (g)

⇒ Decomposition

2) KCl (aq) + AgNO3 (aq) → AgCl (s) + KNO3 (aq)

⇒ Double-replacement reaction

3) 2Na (s) + H2 (g) → 2NaH (s)

⇒ synthesis

4) Mg (OH) 2 (aq) + 2HNO2 (aq) → Mg (NO2) 2 (aq) + 2 H2O (l)

⇒ Double-replacement reaction

5) Ca (s) + 2AgNO3 (aq) → Ca (NO3) 2 (aq) + Ag (s)

⇒ Single-replacement reaction

6) Al2O3 (s) + H2SO4 (aq) → Al2 (SO4) 3 (aq) + H2O (l)

⇒ Double-replacement reaction