Regents Chemistry Exam August 2024 Question 32
33 Given the equation representing a reaction:
2Al + Fe2O3 → Al2O3 + 2Fe
Which type of chemical reaction is represented by this equation?
(1) synthesis
(2) decomposition
(3) single replacement
(4) double replacement
Solution:
There are four different typed of chemical reactions you have to know.
Synthesis = two or more reactants come together to form one product A+B--> AB
Decomposition = opposite of synthesis, one reactant breaks into multiple products.
AB --> A+B
Single Replacement= one element replaces another element that is a part of a compound A +BC --> AC +B
Double Replacement = two elements in two compounds replace one another. Think of two dancing couples switching partners. AB +CD --> AD +CB
The reaction presented is a single replacement reaction. Choice 3 is the correct answer choice.
LINKS:
Comments