To determine the possible ways to describe the components in the given balanced chemical reaction
[tex]\[ \text{2 Ag (s)} + \text{I}_2 (s) \rightarrow \text{2 AgI (s)} \][/tex]
we need to pay close attention to matching particles with particles or moles with moles.
First, let's analyze each provided option:
1. 2 atoms of Ag : 1 molecule of I2 : 2 formula units of AgI
- This option correctly pairs individual particles (atoms, molecules, and formula units).
- It states that 2 atoms of silver (Ag) react with 1 molecule of iodine (I2) to produce 2 formula units of silver iodide (AgI).
- This follows the balanced chemical equation.
- This is a correct description.
2. 2 moles of Ag : 1 mole of I2 : 2 formula units of AgI
- This option balances the reaction using moles, which is a correct approach for chemical stoichiometry.
- It states that 2 moles of silver (Ag) react with 1 mole of iodine (I2) to produce 2 formula units of silver iodide (AgI).
- This follows the principles of stoichiometry and the balanced chemical equation.
- This is also a correct description.
3. 2 atoms of Ag : 1 mole of I2 : 2 moles of AgI
- This option incorrectly mixes atoms and moles.
- It combines individual atoms with moles, which is inconsistent.
- This is an incorrect description.
4. 2 moles of Ag : 1 molecule of I2 : 2 formula units of AgI
- This option incorrectly mixes moles with individual molecules and formula units.
- A consistent unit type is needed (either all moles or all particles).
- This is an incorrect description.
Based on this analysis, the correct descriptions are:
- 2 atoms of Ag : 1 molecule of I2 : 2 formula units of AgI
- 2 moles of Ag : 1 mole of I2 : 2 formula units of AgI
Thus, the possible ways to describe the components in the reaction are given by options 1 and 2.
