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Elza [17]
2 years ago
8

In the reaction shown,

Chemistry
1 answer:
exis [7]2 years ago
8 0

Answer:

Ni (s) is oxidized because it loses electrons. This makes it the reducing agent.

CuCl₂ (aq) is reduced because it gains electrons. This makes it the oxidizing agent.

Explanation:

In the reaction:

Ni(s) + CuCl₂(aq) → Cu(s) + NiCl₂(aq)

Ni (s) is oxidized because it loses electrons. This makes it the reducing agent.

------------> Ni (s) has an oxidation number of 0. All lone atoms (that are not ions) have a 0 oxidation number.

-------------> In NiCl₂ (aq), chlorine must have an oxidation number of -1, and because there are two chorine atoms, they contribute a total -2 charge. To make the overall charge neutral, nickel must have an oxidation number of +2 to balance the charges.

--------------> Because nickel goes from an oxidation number of 0 to +2, this indicates that it lost electrons and was reduced.

CuCl₂ (aq) is reduced because it gains electrons. This makes it the oxidizing agent.

-------------> In CuCl₂ (aq), chlorine must have an oxidation number of -1, and because there are two chorine atoms, they contribute a total -2 charge. To make the overall charge neutral, copper must have an oxidation number of +2 to balance the charges.

------------> Cu (s) has an oxidation number of 0. All lone atoms (that are not ions) have a 0 oxidation number.

--------------> Because copper goes from an oxidation number of +2 to 0, this indicates that it gained electrons and was oxidized.

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Explanation:

5 0
2 years ago
How many moles are in 2.00g of H2O​
gavmur [86]

n = m/M = 2/18 = 1/9 ~0,1 mol

4 0
2 years ago
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Liula [17]

The answer is the Microscope.

6 0
3 years ago
What is the amount of heat released when 25g of water cools 12.5 degrees C ?
Over [174]
Water can't cool at a single temperature. It must start at a higher temperature, and drop to a lower temperature in order to cool. Unless we know the other temperature, there is no way to calculate the amount of thermal energy released.
4 0
3 years ago
Tin (II) fluoride, formerly found in many kinds of toothpaste, is formed in this reaction: Sn (s) + 2HF (g) ——> SnF2 (s) + H2
Readme [11.4K]

1.34 L of HF

Explanation:

We have the following chemical reaction:

Sn (s) + 2 HF (g) → SnF₂ (s) + H₂ (g)

First we calculate the number of moles of SnF₂:

number of moles = mass / molecular weight

number of moles of SnF₂ = 5 / 157 = 0.03 moles

From the chemical reaction we see that 1 mole of SnF₂ are produced from 2 moles of SnF₂. This will mean that 0.03 moles of SnF₂ are produced from 0.06 moles of HF.

Now at standard temperature and pressure (STP) we can use the following formula to calculate the volume of HF:

number of moles = volume / 22.4 (L/mole)

volume of HF = number of moles × 22.4

volume of HF = 0.06 × 22.4 = 1.34 L

Learn more about:

problems with gases at STP

brainly.com/question/8857334

#learnwithBrainly

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3 years ago
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