Question

What are the formulas for the reactants and products? 1. manganese(iv) oxide = 2. aluminum = 3. manganese = 4. aluminum oxide =

Answer 1

Chemical equations are written by identifying reactants and products, writing their chemical formulas, and balancing the equation. Examples include the reaction of aluminum with iron(III) oxide and the combinations between permanganate ion and various cations.

Step-by-step explanation:

In approaching this set of chemistry problems, we have to consider the formulas for reactants and products and understand the principles of writing balanced chemical equations. For some reactions, only a portion of the reaction is provided, and you may need to refer to the full equation to determine the reactants or products.

Writing the Chemical Equations

The general approach to writing chemical equations includes several steps:

1. Identify the reactants and the products in the reaction and write their chemical formulas.
2. Write the equation by placing the reactants on the left of the arrow and the products on the right.
3. Balance the equation so that the number of atoms for each element is the same on both sides.

Using this method, one example given is the following reaction:

Al(s) + Fe₂O₃(s) → 2Fe(s) + Al₂O₃(s)

Here, aluminum reacts with iron(III) oxide to produce iron and aluminum oxide. Also, you have been asked to write out formulas for various ionic compounds and to understand the concept of oxidation states in transition metals.

For example, the permanganate anion is MnO₄⁻ and reactions with K+, Ca2+, and Fe3+ will produce the ionic compounds KMnO₄, Ca(MnO₄)2, and Fe(MnO₄)3, respectively.

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