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
Answers: 1
Chemistry, 22.06.2019 04:00
Seltzer water is created by placing water under pressure with carbon dioxide gas. which of the following statements best describe seltzer water: a. the solution will be slightly acidic b. the solution will be slightly basic. the solution will be strongly acidic. d. the solution will be strongly basic. e. the solution will be neutral
Answers: 3
Chemistry, 22.06.2019 06:30
The following reaction shows sodium carbonate reacting with calcium hydroxide. na2co3 + ca(oh)2 → naoh + caco3 how many grams of naoh are produced from 20.0 grams of na2co3? (molar mass of na = 22.989 g/mol, c = 12.01 g/mol, o = 15.999 g/mol, ca = 40.078 g/mol, h = 1.008 g/mol) 12.2 grams 15.1 grams 24.4 grams 30.2 grams
Answers: 2
Chemistry, 22.06.2019 11:20
Which of the following contributes to the structural rigidity of cellulose? adjacent glucose polymers are stabilized by hydrogen bonding. glucose residues are joined by (α1→4) linkages. cellulose is a highly branched molecule. the conformation of the glucose polymer is a coiled structure.
Answers: 2
Chemistry, 22.06.2019 13:00
What is the mass of 2.00 l of an intravenous glucose solution with a density of 1.15 g/ml?
Answers: 2
Question: For this assignment, you will Determine how solution concentration can affect the rate of...
Physics, 20.02.2021 09:30
World Languages, 20.02.2021 09:30
Mathematics, 20.02.2021 09:30
Chemistry, 20.02.2021 09:30
Mathematics, 20.02.2021 09:30
Mathematics, 20.02.2021 09:30
Mathematics, 20.02.2021 09:40
Mathematics, 20.02.2021 09:40
Mathematics, 20.02.2021 09:40
Biology, 20.02.2021 09:40
Mathematics, 20.02.2021 09:40
Mathematics, 20.02.2021 09:40