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elena55 [62]
3 years ago
15

Balance the following equations for a redox reaction that takes place in basic solution.

Chemistry
1 answer:
lubasha [3.4K]3 years ago
6 0
MnO₂ + 4OH(-) -----> MnO₄(-) + 2H₂O + 3e ........../×2
ClO₃(-) + 3H₂O +6e -----> Cl(-) + 6OH(-)
---------
2MnO₂ + 8OH(-) + ClO₃(-) + 3H₂O +6e ----> 2MnO₄(-) + 4H₂O + 6e + Cl(-) + 6OH(-)
2MnO₂ + 2OH(-) + ClO₃(-) ----> 2MnO₄(-) + H₂O + Cl(-)
---------
2MnO₂ + NaClO₃ + 2NaOH ----> 2NaMnO₄ + NaCl + H₂O

•••••••••
N₂O + 6OH(-) -----> 2NO₂(-) + 4e + 3H₂O
ClO(-) + H₂O + 2e---> Cl(-) + 2OH(-) ......../×2
--------
N₂O + 6OH(-) + 2ClO(-) + 2H₂O + 4e --> 2NO₂(-) + 4e + 3H₂O + 2Cl(-) + 4OH(-)
N₂O + 2OH(-) + 2ClO(-) + ----> 2NO₂(-) + H₂O + 2Cl(-)
-------
N₂O + 2KClO + 2KOH ---> 2KCl + 2KNO₂ + H₂O
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If all the reactants will react and become products, the mass will be 12.5 g. Because the mass of the matter amount will not change during the reaction.
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Which is a characteristic of a strong base
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The third one, it releases H+ions into a solution.
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Answer the following questions for H2CrO4:
Sholpan [36]

If this molecule is one half of a buffer, then the formula of the second half of the buffer is M2CrO4 where M is a univalent metal.

<h3>What is a strong acid?</h3>

A weak acid is one that is able to ionize completely in solution. The acid called chromic acid H2CrO4 is not  able to ionize completely in solution.

We know that a buffer is composed of a weak acid and its salt or a weak base and its salt hence if the acid H2CrO4 is present in a buffer then the other half must be  salt of the acid.

If this molecule is one half of a buffer, then the formula of the second half of the buffer is M2CrO4 where M is a univalent metal.

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7 0
2 years ago
A cook places a pan of food on a hot stove and leaves it there. When the food is just about done cooking, which of the following
rjkz [21]

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C.

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Explanation:

7 0
3 years ago
An alloy of bronze is manufactured by melting 51.2 g of copper with 6.84 g of tin. What is the percent copper in the bronze?
Harlamova29_29 [7]

Answer:

Percentage of copper = 88%

Explanation:

Given data:

Mass of copper = 51.2 g

Mass of tin = 6.84 g

Percentage of copper = ?

Solution:

Formula:

Percentage of copper = mass of copper / total mass × 100

Now we will determine the total mass:

Total mass = mass of copper + mass of  tin

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Now we will calculate the percentage of copper.

Percentage of copper = 51.2 g / 58.04 g × 100

Percentage of copper = 0.88 × 100

Percentage of copper = 88%

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3 years ago
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