1
Synthesis
2.
Single replacement:
3.
Combustion:
4.
Double displacement:
5.
Decomposition:
match these to this
Na + Cl → NaCl
b.
C3H8 + 5 O2 → 3 CO2 + 4 H2O
c.
MgBr2 + 2 NaCl → MgCl2 + 2 NaBr
d.
2 NaCl + Br2 → 2 NaBr2 + Cl2
e.
2 H2O → 2 H2 + O2
1. Synthesis: 2 H2O → 2 H2 + O2
2. Single replacement: 2 NaCl + Br2 → 2 NaBr2 + Cl2
3. Combustion: C3H8 + 5 O2 → 3 CO2 + 4 H2O
4. Double displacement: MgBr2 + 2 NaCl → MgCl2 + 2 NaBr
5. Decomposition: Na + Cl → NaCl
1. Synthesis: The combination of two or more substances to form a compound.
Matching reaction: 2 H2O → 2 H2 + O2
Explanation: In this reaction, two molecules of water decompose into two molecules of hydrogen gas (H2) and one molecule of oxygen gas (O2), which is an example of decomposition.
2. Single replacement: A reaction where an element reacts with a compound, displacing another element from the compound.
Matching reaction: Na + Cl → NaCl
Explanation: In this reaction, sodium (Na) replaces the chlorine (Cl) in the compound to form sodium chloride (NaCl). This is an example of single replacement.
3. Combustion: A reaction where a substance reacts rapidly with oxygen, releasing heat and usually producing a flame.
Matching reaction: C3H8 + 5 O2 → 3 CO2 + 4 H2O
Explanation: In this reaction, propane (C3H8) reacts with oxygen (O2) to produce carbon dioxide (CO2) and water (H2O). This is an example of combustion.
4. Double displacement: A reaction where ions from two compounds exchange places, forming two new compounds.
Matching reaction: MgBr2 + 2 NaCl → MgCl2 + 2 NaBr
Explanation: In this reaction, magnesium bromide (MgBr2) reacts with sodium chloride (NaCl) to form magnesium chloride (MgCl2) and sodium bromide (NaBr). This is an example of double displacement.
5. Decomposition: The breakdown of a compound into two or more simpler substances.
Matching reaction: None provided
Explanation: Decomposition reactions involve the breakdown of a compound into simpler substances. However, based on the reactions provided, none of them match the decomposition reaction.
To match the given chemical reactions to their corresponding types of reactions, let's go through each reaction and determine the type based on the reaction's characteristics.
1. Synthesis:
- A synthesis reaction occurs when two or more substances combine to form a single product.
- The given reaction "Na + Cl → NaCl" fits this criteria because sodium (Na) and chlorine (Cl) combine to form sodium chloride (NaCl).
- Therefore, the answer for this reaction is synthesis.
2. Combustion:
- A combustion reaction involves the reaction of a substance with oxygen, resulting in the release of heat and the formation of carbon dioxide and water.
- The given reaction "C3H8 + 5 O2 → 3 CO2 + 4 H2O" is an example of a combustion reaction.
- Propane (C3H8) reacts with oxygen (O2) to produce carbon dioxide (CO2) and water (H2O).
- Therefore, the answer for this reaction is combustion.
3. Double displacement:
- A double displacement reaction occurs when two compounds exchange ions or elements, resulting in the formation of two new compounds.
- The given reaction "MgBr2 + 2 NaCl → MgCl2 + 2 NaBr" is a double displacement reaction.
- Magnesium bromide (MgBr2) reacts with sodium chloride (NaCl) to form magnesium chloride (MgCl2) and sodium bromide (NaBr).
- Therefore, the answer for this reaction is double displacement.
4. Single replacement:
- A single replacement reaction involves an element replacing another element in a compound.
- The given reaction "2 NaCl + Br2 → 2 NaBr2 + Cl2" is an example of a single replacement reaction.
- Sodium (Na) in sodium chloride (NaCl) is being replaced by bromine (Br) to form sodium bromide (NaBr) and chlorine (Cl2).
- However, it's important to note that the reaction should be written as "2 NaCl + Br2 → 2 NaBr + Cl2" since there is no such compound as NaBr2.
- Therefore, the correct answer for this reaction is single replacement.
5. Decomposition:
- A decomposition reaction occurs when a compound breaks down into two or more simpler substances.
- The given reaction "2 H2O → 2 H2 + O2" is an example of a decomposition reaction.
- Water (H2O) decomposes into hydrogen gas (H2) and oxygen gas (O2).
- Therefore, the answer for this reaction is decomposition.
Matching summary:
a. Synthesis: Na + Cl → NaCl
b. Combustion: C3H8 + 5 O2 → 3 CO2 + 4 H2O
c. Double displacement: MgBr2 + 2 NaCl → MgCl2 + 2 NaBr
d. Single replacement: 2 NaCl + Br2 → 2 NaBr + Cl2
e. Decomposition: 2 H2O → 2 H2 + O2