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Serjik [45]
2 years ago
10

When a strip of magnesium metal is placed in an aqueous solution of copper(II) nitrate, elemental copper coats the surface of th

e magnesium strip and aqueous magnesium nitrate forms.
1. As a reactant, what is the charge on copper?
2. As a product, what is the charge on copper?
Chemistry
1 answer:
Lera25 [3.4K]2 years ago
4 0

Answer:

1. 2+ (Cu^{2+}).

2. 0 (Cu^0).

Explanation:

Hello,

In this case, the described chemical reaction is a redox reaction in fact, since the oxidation states of both magnesium and copper change as shown due to the displacement:

Mg(s)+Cu(NO_3)_2(aq)\rightarrow Mg(NO_3)_2(aq)+Cu(s)

Therefore:

1. Since copper is the cation in the copper (II) nitrate, the (II) means that its charge is 2+ (Cu^{2+}).

2. Since copper is alone, it means no electrons are being neither shared not given, its charge is 0 (Cu^0).

Best regards.

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Which of the following combinations of particles represents an ion of net charge -1 and of mass number 82? Group of answer choic
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A ion of net charge -1 means that the ion wins an e-.

We dismiss options B and C.

We also dismiss option A because neutrons + protons = 81.

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So we have E and C.

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