Assuming That the Proposed Reactants Are Mixed in Stoichiometric Ratios

question 29

Multiple Choice

Assuming that the proposed reactants are mixed in stoichiometric ratios, and at moderate concentrations, which of the following is least likely to represent an observable (e.g., gas evolution or precipitation) reaction?

• A) Ca²⁺ + 2 Cl- + 2 K⁺ + CO₃^2- → ?
• B) 2 Na⁺ + CO₃^2- + 2 HC₂N₃O₂ → ?
• C) H₂S + Cu²⁺ + SO₄^2- → ?
• D) H₂SO₃ + Li⁺ + Cl- → ?
• E) Pb²⁺ + 2 NO₃^- + 2 Na⁺ + 2 OH- → ?

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Definitions:

Condominium

A condominium is a type of property ownership where individual units in a larger complex are owned independently while common areas are held jointly by the unit owners.

Cooperative

An organization owned and operated by a group of individuals for their mutual benefit, focusing on services or goods.

Corporate Owner

An entity that legally owns a corporation, which can be individuals, groups of people, or other companies.

Common Areas

Parts of a property that are available for use by all residents or members of a community, such as lobbies, gardens, and swimming pools in a condominium.