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Chemistry

2 answers:

True [87]3 years ago

6 0

Answer: good wbu?

Explanation:

o-na [289]3 years ago

5 0

Answer:

Good. how are you? :) :) :)

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Identify the type of interactions involved in each of the following processes taking place during the dissolution of sodium chlo

viva [34]

Answer:

I. Solvent-solvent interactions ⇒ B, F

II. Solute-solute interactions ⇒ A, D

III. Solute-solvent interactions ⇒ C, E, G

Explanation:

In the dissolution of sodium chloride (NaCl) in water, the solute is NaCl which in solution is dissociated into its ions (Na⁺ and Cl⁻) and the solvent is water (H₂O) whose molecules are polar and therefore are considered as dipoles.

Solvent-solvent interactions are between water molecules so they are between dipoles (options B and F)

Solute-solute interactions are between NaCl ions in which electrostatic forces are involved. They can be between sodium ions or choride iones (Na⁺-Na⁺, Cl⁻-Cl⁻, repulsive) or between sodium and chloride ions (Na⁺-Cl⁻, attractive) (options A and D).

Solute-solvent interactions are between sodium chloride ions and water molecules, so dipole-ion forces are involved. During dissolution process, solute ions are surrounded by water molecules, which is called hydration. The overall process is exothermic (releases heat) (options C, E and G).

4 0

3 years ago

Draw the lewis structure for the molecule ch3ch2cch. how many sigma and pi bonds does it contain?

babunello [35]

Answer:
The structure of 1-Butyne is shown below and it contains;

Nine Sigma Bonds

Two Pi Bonds

Explanation:
In given structure the sigma bonds are highlighted with blue colour and pi bonds are highlighted by Black colour and indicated by red arrows.
Remember the very first covalent bond between two atoms is always the sigma bond. After formation of sigma bond if further p orbitals with unpaired electrons are available they will form pi bond, or two pi bonds as in given scenario.