## Related questions with answers

With a particular catalyst and at a given temperature, the oxidation of naphthalene to phthalic anhydride proceeds as follows:

$\begin{matrix} \quad & \quad & \text{R}\\ \quad & 1 \nearrow & \text{2} & \searrow 3 & \quad & \text{4}\\ \text{A} & \quad & \rightarrow & \quad & \text{S} & \rightarrow & \text{T}\\ \end{matrix}$

$\begin{array}{ll}\mathrm{A}=\text { naphthalene } & k_{1}=0.21 \mathrm{s}^{-1} \\ \mathrm{R}=\text { naphthaquinone } & k_{2}=0.20 \mathrm{s}^{-1} \\ \mathrm{S}=\text { phthalic anhydride } & k_{3}=4.2 \mathrm{s}^{-1} \\ \mathrm{T}=\text { oxidation products } & k_{4}=0.004 \mathrm{s}^{-1}\end{array}$

What reactor type gives the maximum yield of phthalic anhydride? Roughly estimate this yield and the fractional conversion of naphthalene which will give this yield. Note the word "roughly".

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