Is nuclear fission necessary in order to trigger a nuclear fusion reaction?

1 answer:

3 0

No, a fission reaction is not necessary to trigger a fusion reaction, but for us on earth, it is. In the field of nuclear weapons, a fission bomb is needed to create the heat necessary to set off a fusion weapon. We have to use fission, or, rather, the energy created by that, to initiate the fusion reaction. It might be possible to use a high power source, like a laser, on a small amount of material to get fusion to occur. But we are still experimenting with this in the Tokamak, and it's far from being a done deal. Stars are, in general, massive nuclear fusion reactors. Their constant consumption of fuel powering their high rate of fusion creates a massive amount of energy, and the stars' huge gravity keeps this process from blowing the whole thing apart. No fission is needed to sustain this reaction.

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The reaction between carbon tetrachloride, CCl4, and water, H2O, to form carbon dioxide, CO2, and hydrogen chloride, HCl, has a

Ber [7]

Answer:

1) a) It is a slow reaction kinetically.

2) a) It is a catalyst.

3) c) It lowered the activation energy of the reaction.

Explanation:

1) The reaction between carbon tetrachloride, CCl₄, and water, H₂O, to form carbon dioxide, CO₂, and hydrogen chloride, HCl, has a ΔG° value of -232 kJ/mole, and so is thermodynamically favored. But when you mix carbon tetrachloride with water, no change is observed. What is a possible explanation for this?

a) It is a slow reaction kinetically. TRUE. This is the most likely explanation of why no change is observed.

b) The activation energy of the reaction is too small. FALSE. Slow reactions have a large activation energy.

c) The reaction is not spontaneous. FALSE. ΔG° < 0 so the reaction is spontaneous.

d)The reaction is not favored thermodynamically. FALSE. ΔG° < 0 so the reaction is favored thermodynamically.

2) What word best describes the role that the palladium plays in the reaction between propene and hydrogen above?

It is a catalyst because it increases the rate of the reaction without being altered by the end of the reaction.

3) What did the palladium do to increase the rate of the reaction between the propene and hydrogen?

a)It changed the thermodynamic equilibrium. FALSE. Catalysts don't affect equilibrium

b)It made the Gibbs free energy of the reaction more positive. FALSE. Catalysts don't affect Gibbs free energy.

c)It lowered the activation energy of the reaction. TRUE. According to the Arrhenius equation, the lower the activation energy, the higher the rate constant, and the higher the rate of reaction. This is how catalysts act.

d)It increased the activation energy of the reaction. FALSE.

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3 years ago

Mallory combines two chemicals and notices that each chemical retains its original properties. What did Mallory form?

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Answer:

A mixture

Explanation:

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3 years ago

Which of these activities performed by a chemist is primarily based on an understanding of physics?

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