Which of the following statements is true?

Question

1 - Chemical reaction rates vary with the conditions of the change, but nuclear rates do not.

2 - Nuclear decay rates vary with the conditions of the change, but chemical reaction rates do not.

3 - Both chemical reaction rates and nuclear decay rates vary with the conditions of the change.

4 - Neither chemical reaction rates nor nuclear decay rates vary with the conditions of the change.

I want to say 4, but I am not sure.

Answer 1

It is a poorly worded question, that may be why you are having trouble with it.

Answer is A. Some chemical reactions are effected by the conditions created by the reaction. The best example would be equilibrium reactions that can be shifted one way or the other by adjusting a condition. Like H2 + N2 => NH3. in this instance 2 moles of gas are turning into one mole of gas. By increasing pressure you can effect this reaction. By increasing pressure will you make more or less NH3?

Nuclear reactions are occurring within the nucleus of an atom. We generally consider the nucleus to be insulted from the physical effects of chemistry (like pressure). The nuclear reaction like decay is happening all by itself. Nothing you can do to change it in anyway.

Now the reason why it is a bad question, in nuclear fusion we now have a situation where the nucleus CAN be effected by the conditions created the reaction.

Answer 2

4 - Neither chemical reaction rates nor nuclear decay rates vary with the conditions of the change.

Answer 3

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