The Best Explanation for the Dissolution of ZnS in Dilute

question 102

Multiple Choice

The best explanation for the dissolution of ZnS in dilute HCl is that

• A)the zinc ion is amphoteric.
• B)the sulfide ion concentration is decreased by the formation of H₂S.
• C)the solubility product of ZnCl₂ is less than that of ZnS.
• D)the zinc ion concentration is decreased by the formation of a chloro complex.
• E)the sulfide ion concentration is decreased by oxidation to sulfur.

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Definitions:

Total Costs

The sum of all expenses incurred in the production of goods or services, including direct and indirect costs, both variable and fixed.

Step-Down Method

A method of allocating costs whereby one service department’s cost is allocated to all remaining service departments and operating departments, and so on, until all service department costs are allocated to final products.

Death Spiral

A situation occurring when transfer prices include fixed costs and users reduce their use of the internal product or service. This further increases the transfer price (based on average cost) and more users reduce their demand.