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For a chemical reaction A + B → Product, the order is 1 with respect to A and B. What is the value of x and y? Rate (mol L^-1 s^-1): 0.10, 0.40, 0.80 [A] (mol L^-1): 20, x, 40 [B] (mol L^-1): 0.5, 0.5, y
- 160 and 4
- 80 and 4
- 80 and 2
- 40 and 4
Correct answer: 80 and 2
Solution
The reaction is first order with respect to both A and B, meaning the rate is proportional to the concentration of each. By analyzing the given rates and concentrations, we can determine that when [A] is increased from 20 to 40, the rate quadruples, indicating that [B] must be 0.5 to maintain the correct rate relationship, leading to the values of x as 80 and y as 2.
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