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Home Q & A Board Science-Related Homework Help Chemistry (Moderator: Laser_3)
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zulchaidir zulchaidir
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10 years ago
1. Catalysts can help to bring the reactants together in the correct orientation
2. The chemical formula of a catalyst is written on the left hand side (reactant) side of an equation.
3. Catalysts can provide a surface on which the reaction occurs.
4. Catalysts increase the activation energy.
5. Catalysts increase the magnitude of the equilibrium constant, thus favoring product formation.
6. "Enzymes" are biochemical catalysts.
7. Catalysts increase the rate of a reaction.
8. Catalysts are slowly used up during the reaction and need to be replaced.
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wrote...
#1
10 years ago
well 6,  and...... 2?  maybe 5 ...
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#2
10 years ago
1, 3, 5, 6, 7.

2 is incorrect, catalysts are written above the reaction arrow.
4 is incorrect, catalysts decrease the activation energy thus increasing the rate of reaction (see 7)
8 is incorrect, catalysts are not used up (or if they are, they are also regenerated by a different reaction so that they maintain a constant concentration).

edit: about 5, yes i think the answer below is correct, 5 is false actually. catalysts speed up both the forward and the reverse reaction so the equilibrium constant is unchanged. however, 1 is true i think: catalysts can provide a lower energy pathway by way of bringing the reactants together in the correct orientation (rather than random orientations).
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#3
10 years ago
1 (I don't know about 2), 3, 5, 6, 8 are true.
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friskiefriskie
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10 years ago
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wrote...
#5
10 years ago
7 is definetly true
wrote...
#6
10 years ago
1,3,5,6 and 7
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