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vitfil [10]
3 years ago
10

What is the reducing agent in the reaction below? CrO3 + 2Al Cr + Al2O3

Chemistry
2 answers:
saveliy_v [14]3 years ago
8 0

<u>Answer: </u>The reducing agent of the given chemical reaction is

<u>Explanation:</u>

Reducing agent is defined as the agent which reduces the other substance and itself gets oxidized. It undergoes oxidation reaction. Oxidation reaction is defined as the reaction in which a substance looses its electron. The oxidation state of the substance gets increased.

Oxidizing agent is defined as the agent which oxidizes the other substance and itself gets reduced. It undergoes reduction reaction. Reduction reaction is defined as the reaction in which a substance gains electron. The oxidation state of the substance gets reduced.

For the given chemical reaction:

CrO_3+2Al\rightarrow Cr+Al_2O_3

On reactant side:

Oxidation state of chromium = +5

Oxidation state of aluminium = 0

Oxidation state of oxygen = -2

On product side:

Oxidation state of chromium = 0

Oxidation state of aluminium = +3

Oxidation state of oxygen = -2

As, oxidation state of aluminium is getting increased from 0 to +3. Thus, it is getting oxidized and considered as reducing agent. The oxidation state of chromium is getting reduced from +5 to 0. Thus, it is getting reduced and is considered as oxidizing agent.

Hence, the correct answer is aluminium.

DerKrebs [107]3 years ago
5 0
The answer is B. Al. Al is oxidized so it is the reducing agent
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alisha [4.7K]

Answer:

6 x 10⁵ kg Hg

Explanation:

The mass of mercury in the entire lake is found by multiplying the concentration of the mercury by the volume of the lake.

The volume of the lake is calculated in cubic feet:

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Cubic feet are then converted to mL (1cm³=1mL)

(5.57568 x 10¹⁰ ft³) x (12in/ft)³ x (2.54cm/in)³ = 1.578856752 x 10¹⁵ mL

The mass of mercury is then found:

m = CV = (0.4μg/mL)(1g/10⁶μg)(1kg/1000g) x (1.578856752 x 10¹⁵ mL) = 6 x 10⁵ kg Hg

3 0
3 years ago
Substances that have a define size and shape and vibrating particles that are close together are​
Mazyrski [523]

Substances that have a define size and shape and vibrating particles that are close together are called Solid.

Explanation:

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