subject
Chemistry, 03.11.2020 08:50 williamwc290

Question: For this assignment, you will Determine how solution concentration can affect the rate of a react... For this assignment, you will Determine how solution concentration can affect the rate of a reaction. First reaction is iodide ion (I-1) with hydrogen peroxide (H2O2) in an acidic solution, and produces a slightly orange solution. 2 H+ (aq) + 2 I- (aq) + H2O2 (aq) ? I2 (aq) + 2 H2O (l)

The next reaction will be between the iodine and starch

I2 + starch ? I2-starch complex (blue-black)

Then starch is added to the iodine solution made from the first reaction, the solution will turn black immediately. Its difficult to find the rate of reaction. to be able to time this reaction, you slow it down with another reaction. Adding ascorbic acid will react with the iodine, reducing the concentration of the iodine available to react with the starch.

C6H8O6 (aq) + I2 (aq) ? 2I- (aq) + C6H6O6 (aq) + 2 H+ (aq)

When the ascorbic acid is used up, the remaining iodine molecules can react with the starch and form the black color. The more ascorbic acid you add, the slower the reaction to form the iodine-starch complex will be.

make a hypothesis about the effect of increasing the amount of ascorbic acid will have on the rate of reaction.

As the concentration of ascorbic acid was increased, did the rate of the formation of the iodine-starch complex increase or decrease? Explain your answer in terms of the chemical reactions involve

ansver
Answers: 1

Another question on Chemistry

question
Chemistry, 22.06.2019 00:20
Use the gizmo to find the concentration of the mystery ch3cooh. use the titrant and indicator shown below perform the titration. what is the titrant volume? titrant analyte indicator titrant volume analyte concentration naoh ch3cooh phenophthalein select one: a. 20.0 ml b. 27.0 ml c. 30.0 ml d. 24.0 ml
Answers: 2
question
Chemistry, 22.06.2019 10:00
Water's surface tension and heat storage capacity are accounted for by its a) orbitals b) weight c) hydrogen bonds d) mass e) size
Answers: 2
question
Chemistry, 22.06.2019 23:30
Imagine a small synthetic vesicle made from pure phospholipids enclosing an interior lumen containing 1 mm glucose and 1 mm sodium chloride. if the vesicle is placed in pure water, which of the following happens faster? a. na+ diffuses out. b. cl– diffuses out. c. h2o diffuses in. d. glucose diffuses out. e. sodium chloride diffuses out.
Answers: 3
question
Chemistry, 23.06.2019 04:00
How much energy is required to vaporize 2 kg of copper? a 4730 kj b 207kj c 9460 kj d 414kj
Answers: 1
You know the right answer?
Question: For this assignment, you will Determine how solution concentration can affect the rate of...
Questions
question
Business, 28.06.2019 23:00
Questions on the website: 13722367