Potassium Chloride Is Used as a Substitute for Sodium Chloride

question 31

Multiple Choice

Potassium chloride is used as a substitute for sodium chloride for individuals with high blood pressure. Identify the limiting reactant and determine the mass of the excess reactant remaining when 7.00 g of chlorine gas reacts with 5.00 g of potassium to form potassium chloride.

• A)Potassium is the limiting reactant; 2.47 g of chlorine remain.
• B)Potassium is the limiting reactant; 7.23 g of chlorine remain.
• C)Chlorine is the limiting reactant; 4.64 g of potassium remain.
• D)Chlorine is the limiting reactant; 2.70 g of potassium remain.
• E)No limiting reagent: the reactants are present in the correct stoichiometric ratio.

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Definitions:

Huntington Disease

Hereditary disease characterized by chorea (ceaseless involuntary jerky movements) and progressive dementia, ending in death.

Tay-Sachs Disease

Inherited birth defect caused by the loss of genes that encode the enzyme necessary for breaking down certain fatty substances; appears 4 to 6 months after birth and results in intellectual disability, physical changes, and death by about age 5.

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