Question

Determine the Q-value in kJ/mole reaction for this nuclear reaction. Is this reaction endergonic or exergonic? Measured masses of the nuclei are N 14.00307 amu, 4He 4.00260 amu,o 16.99913 amu, and H 1.00783 amu. O A +1.16x108 kJ/mole reaction;exergonic B -1.16x108 kJ/mole reaction; exergonic Oc+1.16x108 kJ/mole reaction; endergonic +1.93x10-18 kJ/mole reaction; endergonic O D OHide Correct Answer Show Submitted Answer Check My Answer Q13.37 Review Determine the Q-value in kJ/mole reaction for this nuclear reaction: 12 Measured masses of the nuclei are 160 -15.99491 amu, 1c 12.00000 amu, 2g 23.98504 amu, and He 4.00260 amu Numeric Answer: Correct Answer -653000000.0

Answer 1

To answer the given questions one should know the following Q = (m_r - m_p) .931 Me V m_r, m_p - mass of reactions and mass of products (in terms of atomic mass unit) respectively 1 MeV = 1.602 times 10^- 16 kJ N^14_7 + He^4_2 rightarrow O^17_8 + H^1_1 q = (14.000307 + 4.00260 - 16.99913 - 1.00783) .931 times 1.602 times 10^- 16 kj/mol Q = -1.9 times 10^- 13 kj/mol Since value is negative so it is endergonic D option is correct Q = (15.9949 + 12.000 - 23.98504 - 4.00260).931 times 1.602 times 10^- 16 kJ/mol = 1.1 times 10^- 14 kJ/mol Q = + 1.1 times 106- 14 kJ/mol since value is positive so it is exergonic