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

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