Sodium sulfide was added to 27 g of copper (II) chloride. Determine the mass of copper sulfide.
| May 21, 2021 | education
The mass of copper chloride is – 27 g.
Determine the mass of copper sulfide obtained as a result of the reaction. Write down the reaction equation for the interaction of copper chloride and sodium sulfide.
CuCl2 + Na2S = 2NaCl + CuS.
Next, we determine the molar mass of copper chloride.
M (CuCl2) = 134.5 g / mol.
Next, we determine the molar mass of copper sulfide.
M (CuS) = 64 + 32 = 96 g / mol.
Using the reaction equation, we determine the mass of copper sulfide.
27 g of copper chloride – x g of copper sulfide.
134.5 g / mol copper chloride – 96 g / mol copper sulfide.
X = 96 * 27 / 134.5 = 19.3 g.
Answer: the mass of copper sulfide is 19.3 g.
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