Is O2 stronger than H2?
Answer: Bond enthalpy of O2 is greater than that of H2 as it contains double bond between oxygen atoms While hydrogen atoms in H2 are bonded by single bond. mark me as brainliest.
Which is stronger h2 or cl2?
The same reasoning applies to this question. Two chlorine atoms are in a constant struggle for each other electron, but a chlorine atom is much “stronger” than an hydrogen atom, and “steals” the hydrogen electron easily.
What is the bond energy of H2?
Homolytic versus heterolytic dissociation
| Bond | Bond | Bond-dissociation energy at 298 K |
|---|---|---|
| (kJ/mol) | ||
| H−H | hydrogen | 436 |
| H−F | hydrogen fluoride | 569 |
| O−H | in water | 497 |
Is the bond between carbon and hydrogen polar or nonpolar?
Reciprocally, the hydrogen atoms each need one additional electron to fill their outermost shell, which they receive in the form of shared electrons from carbon. Although carbon and hydrogen do not have exactly the same electronegativity, they are quite similar, so carbon-hydrogen bonds are considered nonpolar.
Which has maximum bond dissociation energy?
C-C bond
What is largest bond dissociation energy?
The strongest bond dissociation energy is for the Si-F bond. The weakest energy is for a covalent bond and is comparable to the strength of intermolecular forces.
What is enthalpy of dissociation?
The bond dissociation enthalpy is the energy needed to break one mole of the bond to give separated atoms – everything being in the gas state.
Why are mean bond enthalpies not accurate?
This is because there is no universal, unchanging standard describing which molecules are used to determine each bond – it depends upon what the people making the chart decided to use. Because of this difference, when making predictions, average bond enthalpies are less accurate than formation enthalpies.
Why are bond enthalpies average?
Definition: The Mean bond enthalpy is the enthalpy change needed to break the covalent bond into gaseous atoms, averaged over different molecules These values are positive because energy is required to break a bond.
Why is Hess’s Law more accurate?
Hess’s law will yield a more accurate example because the numbers are more individualized and discrete for each molecule measured, whereas bond enthalpy numbers are averages from many different molecules and are less accurate.
Is Hess’s Law accurate?
Consistent with the law of energy conservation. If a procedure is written as the sum of many stepwise methods, the total process’s enthalpy change is equal to the sum of the different steps’ enthalpy changes. The law of Hess is true since enthalpy is a part of the state.