Give the relative rates of disappearance of reactants and formation of products for each of the following reactions. BrNO(g) + NO(g) → 2 BrNO(g) Δ[Br,NO] Δt a. b. Δ[Br,NO] Δt Δ[Br,NO] Δt Δ[Βr,NO] Δt 2 = Δ[HOF] ΔΕ Δ[ΝΟ] 1 Δt 2 Δ[HOF] At Δ[HF] ΔΕ Δ[ΝΟ] Δt Δ[ΝΟ] ΔΕ Δ[ΝΟ] Δt 2 HOF(g) → 2 HF(g) + O2(g) Δ[HOF] Δ[02] Δ[HF] Δt Δt ΔΕ = = Δ[02] Δt 1 /Δ[BrNO] ΔΕ Δ[02] Δt Δ[02] Δt 1 Δ[BrNO] 2 Δt || = = Δ[BrNO] Δt 12 Δ[BrNO] Δt 2 1 2 1 2 Δ[HF] ΔΕ Δ[HF] ΔΕ Δ[HOF] Δt

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### Understanding Reaction Rates

This section focuses on the relative rates of disappearance of reactants and the formation of products for given chemical reactions.

**Reaction a:**
\[ \text{Br}_2\text{NO(g)} + \text{NO(g)} \rightarrow 2 \text{BrNO(g)} \]

- **Options for Rate Expressions:**

  1. \[ -\frac{\Delta[\text{Br}_2\text{NO}]}{\Delta t} = -\frac{\Delta[\text{NO}]}{\Delta t} = \frac{1}{2} \left( \frac{\Delta[\text{BrNO}]}{\Delta t} \right) \]

  2. \[ \frac{\Delta[\text{Br}_2\text{NO}]}{\Delta t} = \frac{\Delta[\text{NO}]}{\Delta t} = -\frac{1}{2} \left( \frac{\Delta[\text{BrNO}]}{\Delta t} \right) \]

  3. \[ \frac{\Delta[\text{Br}_2\text{NO}]}{\Delta t} = \frac{\Delta[\text{NO}]}{\Delta t} = \frac{1}{2} \left( \frac{\Delta[\text{BrNO}]}{\Delta t} \right) \]

  4. \[ -\frac{\Delta[\text{Br}_2\text{NO}]}{\Delta t} = -\frac{\Delta[\text{NO}]}{\Delta t} = \frac{\Delta[\text{BrNO}]}{\Delta t} \]

**Reaction b:**
\[ 2 \text{HOF(g)} \rightarrow 2 \text{HF(g)} + \text{O}_2\text{(g)} \]

- **Options for Rate Expressions:**

  1. \[ \frac{\Delta[\text{HOF}]}{\Delta t} = \frac{\Delta[\text{O}_2]}{\Delta t} = \frac{\Delta[\text{HF}]}{\Delta t} \]

  2. \[ -\frac{1}{2} \left( \frac{\Delta[\text{HOF}]}{\Delta t} \right) = \frac{\Delta[\text{O}_
Transcribed Image Text:### Understanding Reaction Rates This section focuses on the relative rates of disappearance of reactants and the formation of products for given chemical reactions. **Reaction a:** \[ \text{Br}_2\text{NO(g)} + \text{NO(g)} \rightarrow 2 \text{BrNO(g)} \] - **Options for Rate Expressions:** 1. \[ -\frac{\Delta[\text{Br}_2\text{NO}]}{\Delta t} = -\frac{\Delta[\text{NO}]}{\Delta t} = \frac{1}{2} \left( \frac{\Delta[\text{BrNO}]}{\Delta t} \right) \] 2. \[ \frac{\Delta[\text{Br}_2\text{NO}]}{\Delta t} = \frac{\Delta[\text{NO}]}{\Delta t} = -\frac{1}{2} \left( \frac{\Delta[\text{BrNO}]}{\Delta t} \right) \] 3. \[ \frac{\Delta[\text{Br}_2\text{NO}]}{\Delta t} = \frac{\Delta[\text{NO}]}{\Delta t} = \frac{1}{2} \left( \frac{\Delta[\text{BrNO}]}{\Delta t} \right) \] 4. \[ -\frac{\Delta[\text{Br}_2\text{NO}]}{\Delta t} = -\frac{\Delta[\text{NO}]}{\Delta t} = \frac{\Delta[\text{BrNO}]}{\Delta t} \] **Reaction b:** \[ 2 \text{HOF(g)} \rightarrow 2 \text{HF(g)} + \text{O}_2\text{(g)} \] - **Options for Rate Expressions:** 1. \[ \frac{\Delta[\text{HOF}]}{\Delta t} = \frac{\Delta[\text{O}_2]}{\Delta t} = \frac{\Delta[\text{HF}]}{\Delta t} \] 2. \[ -\frac{1}{2} \left( \frac{\Delta[\text{HOF}]}{\Delta t} \right) = \frac{\Delta[\text{O}_
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When write rate law equation, rate of disappearance written with negative coefficient and rate of appearance written with positive coefficient.

 

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