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MDCAT
Chemistry
2017

Chemistry · Thermochemistry

Work through this past-paper style MCQ, then read the full explanation. Practice more chemistry questions on mMCQ with adaptive practice and topic analytics.

Question

The bond energy of (H2 )molecule (H2→2H) is:

Options
  • A

    436Kj/mol

  • B

    40.7 Kj/mol

  • C

    272 Kj/mol

  • D

    436÷Avagadros no Kj/mol

Explanation

Bond energy is the amount of energy required to break one mole of covalent bonds in a gaseous molecule, resulting in separate gaseous atoms. The bond energy of the H2 molecule can be determined experimentally by measuring the energy required to break the bond in the H2 molecule.The experimental value of the bond energy of H2 is approximately 436 kJ/mol.
(It is a fact and should be memorized.)
 

Bond energy is the amount of energy required to break one mole of covalent bonds in a gaseous molecule, resulting in separate gaseous atoms. The bond energy of the H2 molecule can be determined experimentally by measuring the energy required to break the bond in the H2 molecule.The experimental value of the bond energy of H2 is approximately 436 kJ/mol.

(It is a fact and should be memorized.)

This option is incorrect. Bond energy is the amount of energy required to break one mole of covalent bonds in a gaseous molecule, resulting in separate gaseous atoms. The bond energy of the H2 molecule can be determined experimentally by measuring the energy required to break the bond in the H2 molecule.The experimental value of the bond energy of H2 is approximately 436 kJ/mol.

(It is a fact and should be memorized.)

This option is incorrect. Bond energy is the amount of energy required to break one mole of covalent bonds in a gaseous molecule, resulting in separate gaseous atoms. The bond energy of the H2 molecule can be determined experimentally by measuring the energy required to break the bond in the H2 molecule.The experimental value of the bond energy of H2 is approximately 436 kJ/mol.

(It is a fact and should be memorized.)

This option is incorrect.Bond energy is the amount of energy required to break one mole of covalent bonds in a gaseous molecule, resulting in separate gaseous atoms. The bond energy of the H2 molecule can be determined experimentally by measuring the energy required to break the bond in the H2 molecule.The experimental value of the bond energy of H2 is approximately 436 kJ/mol.

(It is a fact and should be memorized.)

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Tagged under Chemistry · Thermochemistry · 2017