The overall reaction rate will quadruple. The overall reaction rate will stay th

Question

The overall reaction rate will quadruple. The overall reaction rate will stay the same. The overall reaction rate will triple. The overall reaction rate will be cut to 1/4 of the original rate. The overall reaction rate will be cut in half. The overall reaction rate will be 8 times greater. The overall reaction rate will double. For the reaction A + B rightarrow 2C, suppose that the rate = k[A][B]^2 how the overall reaction rate will change if you... ...double the concentration of A. ...double the concentration of B. ...double the concentrations of both A and B. ...double the concentration of A and halve the concentration of B.

Explanation / Answer

Since, rate = k[A][B]2

1. double the concentration of A….

Put [2A] instead of [A] in rate law, the rate becomes 2 times. as given above, new rate = k[2A][B]2 = 2 x rate. Therefore, the overall reaction rate will double

2. double the concentration of B….  

As shown for 1, The rate will increase by a power of four when B is doubled, [2 x 2 = 4]. Therefore, the overall reaction rate will quadruple

3. double the concentration of both A & B….  

Now, on putting 2A instead of A and 2B instead of B, the new rate k[2A][2B]2 will be 8 fold of original rate. Hence, the overall reaction rate will be 8 times greater

4. double the concentration of both A & halve the concentration of B….

Similarly, k[2A][B]2 = k[2A][B/2]2 i.e,half of of original rate. Therefore, the overall reaction rate will be cut in half

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.