Reaction A(g) → 2B(g) + C(g) is a first-order reaction. It was started with pure A. The following table shows…

Question

Reaction **$$A	ext{(g)} ightarrow 2B	ext{(g)} + C	ext{(g)}$$** is a **first-order reaction**. It was started with pure **$$A$$**.

The following table shows the pressure of the system at different times:

| $$t$$ (min) | Pressure of system at time $$t$$ (mm Hg) |
|---|---|
| $$10$$ | $$160$$ |
| $$\infty$$ | $$240$$ |

Which of the following options is incorrect?

Accepted Answer

C. Rate constant of the reaction is **$$1.693 \, 	ext{min}^{-1}$$**

Answer

A. Initial pressure of **$$A$$** is **$$80 \, 	ext{mm Hg}$$**

Answer

B. The reaction never goes to completion

Answer

D. Partial pressure of **$$A$$** after **$$10 \, 	ext{minutes}$$** is **$$40 \, 	ext{mm Hg}$$**

Answer & step-by-step solution

$t$ (min)	Pressure of system at time $t$ (mm Hg)
$10$	$160$
$\infty$	$240$