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Wednesday, February 29, 2012
Chemistry Current Events
Watch the video posted above, and explain why that reaction could possibly oscillate between colors.
Hint: Use what you learned in Chapter 17.
wellllll, I had to look up the definition of oscillate in order to understand the question. For everyone else, it means "To swing back and forth with a steady, uninterrupted rhythm." I'm assuming the chemical added into it made the concentration different/change allowing it to change color. Great hypothesis, right?
I think you both can do better than that. You are settling for what you think are easy answers instead of digging deeper and finding a logical answer. Try Harder, don't try to take a short cut.
Well, after viewing the video and researching a little bit, I found that this experiment is different from others because typically chemical reactions only go one way, but in oscillating reactions, the reaction appears to reverse itself, which is shown when the solution repeatedly switched colors back and forth from blue to clear. I think that the solution is not in equilibrium, and that the forward and reverse reactions do not balance each other because they are taking place at different rates. When there is a decrease in the concentration of the reactants, it causes the rate of the forward reaction to slow. Once the product is formed, the reverse reaction then will occur slowly at first but at an increasing rate. In normal chemical reactions, the rate of the forward reaction continues to decrease while the reverse reaction continues to increase until they are equal. Soooooooooo, I think that maybe the forward reaction and the reverse reaction will never meet or be equal to each other, which causes the frequent color changes, due to the concentrations of the reactants. Also, i think that there is a decrease in the concentration of the reactants but I am not sure what happened to the concentration of the products. I think maybe instead of the concentration of the products increasing, i think that it decreases as well which causes the forward and reverse reaction to never equal eachother.
It seems that the reaction is reversible as it is being stirred. Normally chemical reactions one go one way but this one is going both ways. After watching the video, the color turned blue almost right after the other liquid was poured in. Once it got to clear it took longer to go back together, so it seems that the the solution is not at equilibrium since it reverses. It seems that the reaction will always be changing color and never find equilibrium.
wellllll, I had to look up the definition of oscillate in order to understand the question. For everyone else, it means "To swing back and forth with a steady, uninterrupted rhythm." I'm assuming the chemical added into it made the concentration different/change allowing it to change color. Great hypothesis, right?
ReplyDeleteThe above solution is currently in equilibrium where the solution changes from an acid to a base and vice versa . At least, that's what I think LOL
ReplyDeleteI think you both can do better than that. You are settling for what you think are easy answers instead of digging deeper and finding a logical answer. Try Harder, don't try to take a short cut.
ReplyDeleteWell, after viewing the video and researching a little bit, I found that this experiment is different from others because typically chemical reactions only go one way, but in oscillating reactions, the reaction appears to reverse itself, which is shown when the solution repeatedly switched colors back and forth from blue to clear. I think that the solution is not in equilibrium, and that the forward and reverse reactions do not balance each other because they are taking place at different rates. When there is a decrease in the concentration of the reactants, it causes the rate of the forward reaction to slow. Once the product is formed, the reverse reaction then will occur slowly at first but at an increasing rate. In normal chemical reactions, the rate of the forward reaction continues to decrease while the reverse reaction continues to increase until they are equal. Soooooooooo, I think that maybe the forward reaction and the reverse reaction will never meet or be equal to each other, which causes the frequent color changes, due to the concentrations of the reactants. Also, i think that there is a decrease in the concentration of the reactants but I am not sure what happened to the concentration of the products. I think maybe instead of the concentration of the products increasing, i think that it decreases as well which causes the forward and reverse reaction to never equal eachother.
ReplyDeleteIt seems that the reaction is reversible as it is being stirred. Normally chemical reactions one go one way but this one is going both ways. After watching the video, the color turned blue almost right after the other liquid was poured in. Once it got to clear it took longer to go back together, so it seems that the the solution is not at equilibrium since it reverses. It seems that the reaction will always be changing color and never find equilibrium.
ReplyDelete