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Vinil7 [7]
3 years ago
11

3. What mass of copper could be deposited from a copper(II) Sulphate solution using a current of 5.0 A over 100 seconds? ( F =96

,500C,Charge of Cu in CuSO4 = +2)​
Chemistry
1 answer:
arsen [322]3 years ago
8 0

Mass of copper : 0.165 g

<h3>Further explanation</h3>

Given

5.0 A over 100 seconds

Required

Mass of copper

Solution

Faraday's law:

<em>The mass of the substance formed at each electrode is proportional to the electric current flowing in the electrolysis</em>

<em />\tt W=\dfrac{e.i.t}{96500}<em />

e = Ar / valence = eqivalent weight

i = current

t = time

W = weight

CuSO₄ ----> Cu²⁺ + SO₄²⁻

Cu ----> Cu²⁺ + 2e

e = Ar/2

= 63,5/2 = 31,75

\tt W=\dfrac{31.75\times 5\times 100}{96500}=0.165~g

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3 0
3 years ago
How much ice (in grams) would have to melt to lower the temperature of 354 ml of water from 26 ?c to 6 ?c? (assume the density o
Anit [1.1K]
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Heat = mC(T2-T1) 

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3 years ago
The ro– group is the nucleophile. think about which group in the alkyl halide (iodoethane) is the leaving group. keep in mind th
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5 0
1 year ago
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Inessa05 [86]
The correct answer for the question that is being presented above is this one: 

Given that:
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</span>
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