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Ad libitum [116K]
3 years ago
12

A scientist measures the rate of a reaction between two liquids. Then he performs the reaction again, adding solid manganese. Th

e reaction takes place more quickly the second time. The mass of the manganese decreased by 0.45 grams during the reaction. He claims that the manganese acted as a catalyst because it sped up the reaction. Explain what is wrong with the scientists' reasoning.
Chemistry
2 answers:
makkiz [27]3 years ago
7 0

Answer:

The manganese is not functioning as a catalyst.

Explanation:

A substance that can be supplemented to a reaction to enhance the rate of a reaction without getting used up in the process is known as a catalyst. The catalysts generally accelerate the reaction by changing the mechanism of the reaction or by minimizing the activation energy.  

Thus, if the manganese is used as a catalyst then its mass would not have been decreased, and it would just continue to change the reaction unless and until it gets consumed. Therefore, manganese is not functioning as a catalyst.  

Neporo4naja [7]3 years ago
4 0
A catalyst speeds up the reaction, but it is never consumed during the reaction (shown in this case by the decrease of Mn mass).
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