Copper(II) Sulfide, CuS, Is Used in the Development of Aniline

question 44

Multiple Choice

Copper(II) sulfide, CuS, is used in the development of aniline black dye in textile printing. What is the maximum mass of CuS which can be formed when 38.0 mL of 0.500 M CuCl₂ are mixed with 42.0 mL of 0.600 M (NH₄) ₂S? Aqueous ammonium chloride is the other product.

• A)2.41 g
• B)1.82 g
• C)1.21 g
• D)0.909 g
• E)0.044 g

---

Definitions:

Devaluation

Government policy that lowers the nation’s exchange rate so that its currency is worth less than it had been relative to foreign currencies.

Currency

Coins and paper money that serve as a medium of exchange.

Exports

Goods and services produced in a nation and sold to customers in other nations.

Imports

Goods and services bought by people in one country that are produced in other countries.