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garik1379 [7]
3 years ago
13

In an experiment to displace

Chemistry
1 answer:
Tju [1.3M]3 years ago
8 0

The percentage yield of copper = 76%

<h3>Further explanation</h3>

Given

6.5g of Zinc

The mass of Copper: 4.8 g

Required

The percentage yield of copper

Solution

Reaction

Zn+CuSO₄⇒Cu+ZnSO₄

mol Zn :

= mass : Ar Zn

= 6.5 g : 65,38 g/mol

= 0.0994

From the equation, mol ratio of Zn : Cu = 1 : 1, so mol Cu = 0.0994

Mass Cu (theoretical) :

= mol x Ar Cu

= 0.0994 x 63,546

= 6.316 g

%yield = (actual/theoretical) x 100%

%yield = (4.8/6.316) x 100%

%yield = 76%

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