Explanation:
CaOCl₂ + 2HCl (dil.) → CaCl₂ + Cl₂ + H₂O. It also releases Cl₂ on reaction with CO₂ in air: CaOCl₂ + CO₂ → CaCO₃ + Cl₂. Water alone hydrolyses it slowly. NaOH does not release Cl₂. The chlorine gas is responsible for bleaching and disinfection.
Explanation:
Glass is an amorphous (non-crystalline) solid, sometimes called a supercooled liquid. It lacks long-range periodic order; atoms are arranged in a disordered network. It softens over a temperature range rather than having a sharp melting point. Common glass is soda-lime-silicate glass. Crystalline solids have sharp melting points and regular lattice structures (e.g., NaCl, quartz).
Explanation:
BF3 has a trigonal planar geometry with bond angles of 120 degrees. The three B-F bond dipoles are equal in magnitude and symmetrically arranged, so their vector sum cancels out completely, resulting in a net dipole moment of zero. H2S is bent, NF3 is pyramidal, and ClF3 is T-shaped.
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