Question

Which of the following is NOT a way to speed up a chemical reaction? (Select all that apply), and What types of chemical reactions are the following? Column A 1. 2. 3. 4. 5. - - — - increasing the concentration of one of the reactants decreasing the temperature of one of the reactants increasing the temperature of one of the reactants decreasing the surface area of one of the reactants — Al + + GaP→ Ga + AIP 2 Mg + 0₂ → 2 MgO MgO + BeSe→→ BeO + MgSe CH₂ + 20₂ → CO₂ + 2H₂O 2 NaCl → Na + Cl₂ Column B a. Single Replacement b. Combustion c. Decomposition d. Double Replacement e. Synthesis​

Answer 1

Decreasing the temperature and surface area of reactants are not ways to speed up chemical reactions. Al + GaP → Ga + AlP is a single replacement reaction; 2 Mg + O₂ → 2 MgO is a synthesis reaction; MgO + BeSe → BeO + MgSe is a double replacement reaction; CH₂ + 2O₂ → CO₂ + 2H₂O is a combustion reaction; 2 NaCl → Na + Cl₂ is a decomposition reaction.

Step-by-step explanation:

The methods that are not ways to speed up a chemical reaction are decreasing the temperature of one of the reactants, which tends to slow down reactions as particles move slower and collide less frequently with less energy, and decreasing the surface area of one of the reactants, which provides fewer opportunities for reactant particles to come into contact with each other.

Now, let's analyze the types of reactions that are mentioned:

1. Al + GaP → Ga + AlP is a single replacement reaction.
2. 2 Mg + O₂ → 2 MgO is a synthesis reaction, where simple substances combine to form a more complex substance.
3. MgO + BeSe → BeO + MgSe is a double replacement reaction.
4. CH₂ + 2O₂ → CO₂ + 2H₂O is a combustion reaction, which generally involves a hydrocarbon reacting with oxygen to produce carbon dioxide and water.
5. 2 NaCl → Na + Cl₂ is a decomposition reaction, where a single compound breaks down into two or more elements or simpler compounds.