342&offset-next; prevous l 11of11/ return to assign Part A The reaction between

Question

342&offset-next; prevous l 11of11/ return to assign Part A The reaction between carbon tetrachlonide, CCl, and water, H 0, to form carbon dioxide, CO, and hydrogen chloride, HCL has a AG value of -232 kJ/mole, and so is thermodynamically favored But when you mix carbon tetrachloride with water, no change is obserwed What is a possible explanation for this? Hints Hint 1. How to approach the problem Can you use thermodynamic arguments to answer this question? O The reaction is not tavored thermodynamically lt is a slow reaction kirotcally O The activation energy of the reaction is too small O The reaction is not spontaneous Submit My Answers Give Up You have some propene, H2C-CHCHs, in a compressed gas tank that you need to convort to propane, Hs CCH, CHs. to run your cabin hoater and thidge You have another tank of compressed hydrogen gas, Ha, sitting out in your shed Your first idea is to fill up a third tank with a mxture of the two gases, but whon you try that, nothing happens You look under your kitchon sink and find some powdered palladium moced in inert charcoal You take the palladium and put at into the flowpath from the hydrogen and propene tanks As you begin flowing the moture of propone and hydrogen, you notice with glee that by the time the gas reaches the receving tank, t is propane gas Ater all the propene has been converted to propane, you pour the paladium-charcoal moture into a crucibko. After analyzing the palladium, you notice that its chemical stale has not changed Part B What word best describes the role that the paladium plays in the reaction betwoon propene and hydrogon above? Hints O tis a catalyst

Explanation / Answer

Ans Part A : It is a slow reaction kinetically.

The reaction is thermodynamically feasible as the gibbs free energy of the reaction is negative. So though the reaction is thermodynamically favourable , but that does not mean that it will occur fast. It can also occur slow. The temperature and catalysts play a major role in increasing the rate of reaction.

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