which of the following concerning nuclear chemistry is/are correct? 1. Beta part

Question

  

which of the following concerning nuclear chemistry is/are correct?

1. Beta particle emission produces a nucleus with one additional neutron and 1 additional proton

2.No stable nuclides are known above atomic number 83.

3.In electron capture a proton is converted to a neutron through the capture of an inner orbital Electron

9. Consider the following hypothetical reaction (at 316.8 K). Standard free energies, in ki/mol, are given in parentheses. (-32.2) What is the value of the equilibrium constant for the reaction at 316.8 K? (207.8) (-237.0) a. 0.42 b. 1.0 c. 273 d. 6.5x 104 e. 0.32 10. When the following oxidation-reduction reaction in acidic solution is balanced, what is the lowest whole-number coefficient for Rb (aq)?

Explanation / Answer

Q9

find dG at T = 316.8

dG° = Gproducts - Greactants

dG° = 207.8 -237 --32.2

dG° = 3 kJ = 3000 J/mol

dG = -RT*ln(K)

3000 = 8.314*316.8*ln(K)

K = exp(-3000 /(8.314*316.8))

K = 0.320137

choose E

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