Question

the iupac name for fe₂o₃(s) is *
iron(ii) oxide
iron trioxide
iron oxide
iron(iii) oxide

consider the following skeleton equation for the production of ammonia. when the equation is balanced, how many atoms of hydrogen appear on each side of the chemical equation? n2 + h2 ---> nh3
two
three
six
eight

what type of chemical reaction will produce at least one solid ionic product from the reaction of two aqueous ionic solutions? *
single replacement
double replacement
synthesis
combustion

Explanation:

Step1: Determine IUPAC name of Fe₂O₃

In Fe₂O₃, iron has an oxidation state of +3. The IUPAC naming convention for metal - non - metal compounds with variable oxidation states uses Roman numerals in parentheses after the metal name. So it is iron(III) oxide.

Step2: Balance the ammonia production equation

The unbalanced equation is N₂ + H₂ → NH₃. To balance it, we use coefficients: N₂ + 3H₂ → 2NH₃. On the left - hand side, we have 3×2 = 6 hydrogen atoms, and on the right - hand side, we have 2×3 = 6 hydrogen atoms.

Step3: Identify the reaction type

When two aqueous ionic solutions react to form at least one solid ionic product, it is a double - replacement reaction. In a double - replacement reaction, the positive and negative ions of two ionic compounds exchange places, and if one of the products is insoluble, it precipitates out as a solid.

Answer:

1. D. iron(III) oxide
2. C. six
3. B. double replacement