Questions: Write the formula for each of the following: a. sodium carbonate b. nitrogen dioxide c. aluminum nitrate d. copper(I) nitride e. potassium phosphate f. cobalt(III) sulfate

Write the formula for each of the following: a. sodium carbonate b. nitrogen dioxide c. aluminum nitrate d. copper(I) nitride e. potassium phosphate f. cobalt(III) sulfate

Solution

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Solution Steps

Step 1: Identify the Chemical Formulas

We need to write the chemical formulas for the given compounds. Each compound's name provides clues about its composition and the ratio of its constituent elements.

Step 2: Write the Formula for Sodium Carbonate

Sodium carbonate consists of sodium (Na) and carbonate (CO$_3$). Sodium has a charge of +1, and carbonate has a charge of -2. To balance the charges, we need two sodium ions for every carbonate ion.

\[ \text{Sodium carbonate: } \text{Na}_2\text{CO}_3 \]

Step 3: Write the Formula for Nitrogen Dioxide

Nitrogen dioxide consists of one nitrogen (N) atom and two oxygen (O) atoms.

\[ \text{Nitrogen dioxide: } \text{NO}_2 \]

Step 4: Write the Formula for Aluminum Nitrate

Aluminum nitrate consists of aluminum (Al) and nitrate (NO$_3$). Aluminum has a charge of +3, and nitrate has a charge of -1. To balance the charges, we need three nitrate ions for every aluminum ion.

\[ \text{Aluminum nitrate: } \text{Al(NO}_3\text{)}_3 \]

Final Answer

\[ \boxed{ \begin{aligned} \text{a. Sodium carbonate: } & \text{Na}_2\text{CO}_3 \\ \text{b. Nitrogen dioxide: } & \text{NO}_2 \\ \text{c. Aluminum nitrate: } & \text{Al(NO}_3\text{)}_3 \\ \end{aligned} } \]

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