Answer is option (c).
The reaction of iodine with thiosulfate is more rapid than the reaction of I- and bromate.
Since, iodine ion (I-) is slowly oxidised by bromate ion (Br03-).
On the other hand , thiosulfate reacts rapidly with iodine
The reaction of iodine with thiosulfate is Select one: a. Sometimes slower, sometimes faster than the...
is it faster or slower. thanks for helping.
9. Indicate whether the following changes in reaction conditions will result in a faster or slower reaction. (a) Cooling down the reaction vessel. (b) Grinding a reactive solid into a powder. (c) Adding a catalyst.
would this E2 reaction go faster or slower than the
ordinary bromocyclohexane. explain
Which of the following shows the conformation necessary for E2 elimination of the compound shown below? SH І я t Br
In iodine clock reaction, which factor has the greater effect? a. pH b. Peroxide c. Thiosulfate
Question 7 Select the false statement. For a reaction 2 AB, A disappears faster than B appears. Fast reactions have high activation energies. The rate of a first-order reaction is directly dependent upon the concentration of a single reactant Reaction intermediates are produced in one elementary step and consumed in another.
Which of the following is correct? (a) When passing through air, blue light travels slower than green light (b) When passing through water, violet light travels slower than red light (c)When passing through air, green light travels faster than violet light (d) When passing through glass, red light travels slower than violet light Choose between (a), (b), (e) and (d)!
In the Iodination of Salicylamide, active iodine was created by the action of sodium hypochlorite on sodium iodide. When the reaction was complete, 10% sodium thiosulfate solution was added to the reaction mixture before acidification. What is the role of sodium thiosulfate in this procedure? A. It tests the pH of the mixture. B. It destroys excess sodium hypochlorite. C. It removes water from the organic layer. D. It protects salicylamide from the harsh acid. I have seen that the...
1. which of the factors that affect chemical reaction rates explains why milk spoils slower when stored in the refrigerator? a. ctalyst b. temperature c. Concentration d. Surface area 2, The arte of a chemical increases with increasing concentrations of reactants because reactant molecules move faster when they are more concentrated a. True b. False
need help with questions 5 and 6
5. A mixture of starch and iodine (12) turns blue because a. starch is blue b. iodine (12) is blue c. starch is a chain of glucose molecules d. iodine (12) interacts with coiled starch molecules e. copper (II) ion is reduced to copper (I)ion 6. Suppose that when you test your original diluted saliva with starch-iodine, it takes 20 minutes for the color to change. You should a. add more water to...
With a catalyst present, the rate of a particular reaction is 65 times faster than without the catalyst. If the catalyst is known to decrease the activation energy by 15.0 kJ moI-1, at what temperature (K) did the reaction occur? A. 432 B. 275 C. 722 D. 301 E. 309
answer all
1. In each of the following, indicate which S2 reaction will occur faster. Explain your reasoning. a. 1-bromo-2,2-dimethylpropane or 1-bromo-3-methylbutane with Nal in DMSO. b. 1-iodopentane with NaN, in ethanol or NaSCH, in ethanol, c. Reaction of isobutyl iodide with NaBr in acetone or in ethanol. 2. In each of the following, indicate which S, 1 reaction will occur faster. Explain your reasoning. a. Reaction of I-chloro-1-methylcyclohexane or 1-chloro-2-methylcyclohexane in aqueous ethanol. b. Reaction of 2-chloropentane or 3-bromohexane...