Question

1. nacl sodium chlorine
2. mgo magnesium monocgen
3. ca(no₃)₂ calcium nitrate
4. k₂co₃
5. al(oh)₃
6. cucl₂
7. fe₂o₃
8. (nh₄)₂so₄
9. co₂
10. n₂o₄
11. hno₃
12. ch₃cooh

Explanation:

Step1: Analyze the compound formula

For \( \text{K}_2\text{CO}_3 \), identify the cation and anion. The cation is \( \text{K}^+ \) (potassium ion) and the anion is \( \text{CO}_3^{2-} \) (carbonate ion).

Step2: Name the compound

Using the rules for naming ionic compounds (cation name first, then anion name), the cation is potassium and the anion is carbonate. So the name is potassium carbonate.

Answer:

potassium carbonate

(For sub - questions 5 - 12, the following are the answers:

1. \( \text{Al(OH)}_3 \): aluminum hydroxide
2. \( \text{CuCl}_2 \): copper(II) chloride (or cupric chloride)
3. \( \text{Fe}_2\text{O}_3 \): iron(III) oxide (or ferric oxide)
4. \( (\text{NH}_4)_2\text{SO}_4 \): ammonium sulfate
5. \( \text{CO}_2 \): carbon dioxide
6. \( \text{N}_2\text{O}_4 \): dinitrogen tetroxide
7. \( \text{HNO}_3 \): nitric acid
8. \( \text{CH}_3\text{COOH} \): acetic acid)