Question

Page | 143 PRE-LABORATORY QUESTION NAME: A student weighs 1.00 gram of zinc powder and places it into a beaker containing 25.00 mL of a 0.50 M CuClz solution. After the reaction is completed, the solid the bottom of the beaker, filtered, washed with hydrochloric acid solut mass of the precipitate is 0.72 gram. Zn 65, Cu 63.5C; CI 35.5. completed, the solid (metallic copper) is recovered from acid solution, and dried completely. The 1. Write the equation representing the chemical reaction. 2. Determine the number of moles of zinc reactant present 3. Determine the number of moles of CuCl2 reactant present 4. Calculate the theoretical yield of the reaction. 5.Calculate the percent yield of this reaction.

Answer 1

Answer:-

The answer is given in the image,

2 65 6.0125

1. 68У, cuu2= 635 x 1.689 u 134.S 0 794