in experiment 1,10 ml of water was added to keep a constant volume. Assuming the

Question

in experiment 1,10 ml of water was added to keep a constant volume. Assuming there are 20 drops for 1 ml and the rate =1/time , complete the following table Kinetics Pre-laboratory Assignment A student using the following amount of reagents collected the following data: Expt. No. KI (dps) TKBr03 (dps) Nazs203(dps) HCI (dps) TTime (sec) 10 10 10 in experiment 1,10 mL of water was added to keep a constant volume. Assuming are there 20 drops for 1 mln and the rate 1/time, complete the following table (Show one set of calculations): Expt. No TKI (dps) KBro (dps) T Hol (dps) Rate (17) 1. The order with respect to l is: 2. The order with respect to Bros' is: 3. The order with respect to H. is: 4. The rate expression is:

Explanation / Answer

For the given set of data

Expt. No. 1

let the final volume be 10 ml constant

[KI] = 0.5/10 = 0.05

[KBrO3] = 0.5/10 = 0.05

[HCl] = 0.5/10 = 0.05

1. When the concentration of [I-] was doubled, in expt. No. 2, while keeping [KBrO3] and [HCl] constant, the rate doubled, so the order with repsect to [I-] = 1

2. When the concentraion of [BrO3-] was doubled in expt 3. from expt 1 while keeping [I-] and [H+] constant, the rate remained the same. So the order with respect to [BrO3-] = 0

3. when the concentration of [H+] was doubled in expt 4, compared to expt 1, while keeping [I-] and [BrO3-] constant, the rate quadruled. So the order with respect to [H+] = 2

4. the rate expression would be thus,

rate = k[I-][H+]^2

k = rate constant

Related Questions

Navigate

• Browse (All)
• Browse I
• Subjects

---

---

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