Neco Model Questions Vol1 2024 Chemistry Question 3

Practice essay / theory question 3 from the 2024 Neco Model Questions Vol1 Chemistry examination. This question covers Chemical Bonding .

Neco Model Questions Vol1 2024 Chemistry Essay / Theory
Topic: Chemical Bonding
Question 3 NECO_MODEL_QUESTIONS_VOL1 • 2024 • CHEMISTRY • essay

A newly synthesized covalent compound, phosphorus trichloride (PCl₃), has been isolated in the laboratory. The electronegativity values are: χ(P) = 2.19, χ(Cl) = 3.16. The molecule contains one phosphorus atom bonded to three chlorine atoms and possesses one lone pair on phosphorus.

Question Parts

( a )
Using the given electronegativity values, determine the type of bond formed between phosphorus and chlorine atoms.
( b )
Predict the molecular geometry of PCl₃ using VSEPR theory and state the hybridisation of the central phosphorus atom.
( c )
Based on the geometry and the polarity of the P–Cl bonds, decide whether the molecule possesses a net dipole moment. Justify your answer.
( d )
Explain how the polarity determined in part (c) influences the solubility of PCl₃ in water and in a non‑polar solvent such as carbon tetrachloride (CCl₄).

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About This Question

This is Neco Model Questions Vol1 2024 Chemistry Question 3. It is one of the essay questions from the 2024 Neco Model Questions Vol1 Chemistry examination.

The question covers Chemical Bonding .

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