equation: U(s) + F,(g) UF,(g) Write the reaction-quotient expression, Qe, for this reaction.

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**Chemical Reaction and Reaction Quotient**

**Equation:**
\[ \text{U(s) + F}_2\text{(g)} \rightleftharpoons \text{UF}_6\text{(g)} \]

**Task:**
Write the reaction-quotient expression, \( Q_c \), for this reaction.

**Answer Box:**
The expression for the reaction quotient, \( Q_c \), involves the concentration of the products divided by the concentration of the reactants, each raised to the power of their stoichiometric coefficients.

**Answer Bank Options:**
- \([U]^3\)
- \([UF_6]^2\)
- \([UF_6]\)
- \([F_2]^2\)
- \([F_2]^6\)
- \([F_2]^3\)
- \([F_2]\)
- \([UF_6]^3\)
- \([U]\)

To correctly write \( Q_c \) for this reaction:
1. **Identify the Product and Reactants:**
   - Product: \([UF_6]\)
   - Reactants: \([U]\) and \([F_2]\)

2. **Use Stoichiometry in the Expression:**
   - The stoichiometric coefficient of \( UF_6 \) is 1, thus it appears as \([UF_6]\).
   - The stoichiometric coefficient of \( F_2 \) is 1, thus it appears as \([F_2]\).

3. **Write the Expression:**
   \[
   Q_c = \frac{[UF_6]}{[F_2]}
   \]

In this specific reaction, \( U \) is a solid, thus it does not appear in the expression for \( Q_c \) since solids and liquids are omitted from equilibrium expressions.
Transcribed Image Text:**Chemical Reaction and Reaction Quotient** **Equation:** \[ \text{U(s) + F}_2\text{(g)} \rightleftharpoons \text{UF}_6\text{(g)} \] **Task:** Write the reaction-quotient expression, \( Q_c \), for this reaction. **Answer Box:** The expression for the reaction quotient, \( Q_c \), involves the concentration of the products divided by the concentration of the reactants, each raised to the power of their stoichiometric coefficients. **Answer Bank Options:** - \([U]^3\) - \([UF_6]^2\) - \([UF_6]\) - \([F_2]^2\) - \([F_2]^6\) - \([F_2]^3\) - \([F_2]\) - \([UF_6]^3\) - \([U]\) To correctly write \( Q_c \) for this reaction: 1. **Identify the Product and Reactants:** - Product: \([UF_6]\) - Reactants: \([U]\) and \([F_2]\) 2. **Use Stoichiometry in the Expression:** - The stoichiometric coefficient of \( UF_6 \) is 1, thus it appears as \([UF_6]\). - The stoichiometric coefficient of \( F_2 \) is 1, thus it appears as \([F_2]\). 3. **Write the Expression:** \[ Q_c = \frac{[UF_6]}{[F_2]} \] In this specific reaction, \( U \) is a solid, thus it does not appear in the expression for \( Q_c \) since solids and liquids are omitted from equilibrium expressions.
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