In the Reaction CaO(s)+ CO₂(g)→ CaCO₃(s)

question 68

Multiple Choice

In the reaction CaO(s) + CO₂(g) → CaCO₃(s) ,

• A) O^2- acts as a Lewis base and CO₂ acts as a Lewis acid.
• B) O^2- acts as a Lewis base and Ca²⁺ acts as a Lewis acid.
• C) CaO is the Lewis acid and CaCO₃ is its conjugate base.
• D) CO₂ is the Lewis acid and CaCO₃ is its conjugate base.
• E) Ca²⁺ acts as a Lewis acid and CO₃^2- acts as a Lewis base.

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Definitions:

Presbyopia

A natural age-related condition where the eye's lens loses its ability to focus properly, making it difficult to see objects up close.

Lens

A lens is a piece of transparent material with curved surfaces, typically used in glasses and optical devices to focus or disperse light rays and form images.

Tinnitus

A condition characterized by hearing noises not caused by an external source, often described as ringing, buzzing, or humming in the ears.

Continuous Ringing

Continuous ringing, often referred to as tinnitus, is the perception of noise or ringing in the ears when no external sound is present.