교과서 질문
Magnetite, an iron ore with formula Fe3O4, can be reduced by treatment with hydrogen to yield iron metal and water vapor.
Write the balanced equation.
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7. Chemical Reactions
Types of Chemical Reactions
객관식
Indicate the type of chemical reaction taking place from the following equation:
A
Decomposition
B
Double Displacement
C
Combination
D
Combustion
검증된 단계별 안내1
Identify the reactants and products in the chemical equation. The reactants are calcium hydroxide (Ca(OH)2) and aluminum sulfate (Al2(SO4)3), both in aqueous form. The products are calcium sulfate (CaSO4) and aluminum hydroxide (Al(OH)3), both in solid form.
Recognize the type of chemical reaction. In this equation, two compounds react to form two new compounds, indicating a double displacement reaction.
Understand the concept of double displacement reactions. These reactions involve the exchange of ions between two compounds, resulting in the formation of two new compounds.
Examine the ionic exchange. Calcium ions (Ca2+) from calcium hydroxide swap places with aluminum ions (Al3+) from aluminum sulfate, forming calcium sulfate and aluminum hydroxide.
Conclude that the reaction is a double displacement reaction, as evidenced by the exchange of ions between the reactants to form new products.
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