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Which of the following is a possible way to describe the components in the reaction below?

[tex]\ \textless \ br/\ \textgreater \ 2 Ag(s) + I_2(s) \rightarrow 2 AgI(s)\ \textless \ br/\ \textgreater \ [/tex]

Hint: Make sure particles pair with particles or moles pair with moles.

A. 2 atoms Ag : 1 molecule I_2 : 2 formula units AgI
B. 2 moles Ag : 1 mole I_2 : 2 formula units AgI
C. 2 atoms Ag : 1 mole I_2 : 2 moles AgI
D. 2 moles Ag : 1 molecule I_2 : 2 formula units AgI

Sagot :

GinnyAnswer
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.
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