Chemical Reaction Engineering

Use this for “Doubling CA from 0.25 to 0.5 mol/L raises the initial rate from 0.002 to 0.008 mol/(L·s). Find the order n and k.”

Use this for “A plot of ln k against 1 ÷ T has slope −9622 K and intercept 29.08. Find E, A and ln k at 320 K.”

Use this for “A second-order liquid reaction, k = 0.5 L/(mol·min), is fed at 2 mol/L. What space times reach 80% conversion in a CSTR and in a PFR?”

Use this for “A first-order reaction with k = 0.2 per min runs in a batch reactor. How long until 90% of A has reacted?”

Use this for “Two CSTRs, each with 5 min space time, run a first-order reaction with k = 0.2 per min. What conversion leaves the second tank?”

Use this for “20 mol/min of A at 2 mol/L reacts first order, k = 0.2 per min. Which needs less volume for 80% conversion? Read the CSTR as the rectangle and the PFR as the area under FA0 ÷ (−rA).”

Use this for “A → D has kD = 0.8 L/(mol·min), second order; A → U has kU = 0.2 per min, first order. Find the selectivity at CA = 0.5 mol/L.”

Use this for “A first-order reaction (k = 10 s⁻¹) runs in spherical pellets 3 mm in radius with Dₑ = 10⁻⁶ m²/s. Find the Thiele modulus and the effectiveness factor.”

Use this for “Ethylene is hydrogenated on nickel inside a porous pellet. What happens first, and what last?”

Use this for “E = 80 kJ/mol, k = 5 × 10⁻⁵ per min at 300 K, τ = 10 min, fed at 300 K with ΔTad = 240 K. Compare XMB and XEB at 360 K.”

Use this for “A CSTR is fed 2 mol/s of A at 300 K, ΣθCₚ = 250 J/(mol·K), ΔHRx = −60 kJ/mol, with UA = 1000 W/K and coolant at 300 K. What X holds it at 360 K?”

Use this for “A ⇌ B has ΔHRx = −60 kJ/mol and K = 50 at 300 K. What is the equilibrium conversion at 350 K?”