Calculate the enthalpy of reaction for 2co + o2 → 2co2. given the following bond energies:
be(c≡o) = 1074 kj/mol
be(o≡o) = 499 kj/mol
be(c≡o) = 802 kj/mol

Answer : The enthalpy change for the reaction is 1043 kJ/mol.

Explanation :

The given chemical reaction is:

As we know that:

The enthalpy change of reaction = E(bonds broken) - E(bonds formed)

Given:

= 1074 kJ/mol

= 499 kJ/mol

= 802 kJ/mol

Now put all the given values in the above expression, we get:

Therefore, the enthalpy change for the reaction is 1043 kJ/mol.

both adhesion and cohesion are attractions.

they are different in that adhesion is the force of attraction between the molecules of two different substances, whereas cohesion is the force of attraction between molecules of the same substance.

possible examples include capillary action, in which the adhesion between water and glass causes the water to rise in a narrow tube against the force of gravity.

because of hydrogen bonding, water is extremely cohesive.

this causes molecules on the surface of water to be drawn inward, which is why drops of water form beads on smooth surfaces.

hope this .