A chemist investigated the reaction D + E → products and obtained the following initial-rate data. Minor experimental uncertainty is present in the measured rates.
Trial [D]₀ (M) [E]₀ (M) Initial rate (M·s⁻¹)
1 0.200 0.100 5.1×10⁻⁵
2 0.200 0.200 1.03×10⁻⁴
3 0.100 0.100 2.6×10⁻⁵
4 0.300 0.100 7.6×10⁻⁵
Using the most reliable comparison of trials, determine the reaction order with respect to E.