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kirill115 [55]
3 years ago
8

In a neutral solution the concentration of _____. a. hydrogen ions is less than the concentration of hydroxide ions b. water mol

ecules is less than the concentration of hydrogen ions c. hydrogen ions is greater than the concentration of hydroxide ions d. hydrogen ions is equal to the concentration of hydroxide ions e. water molecules is less than the concentration of hydroxide ions
Chemistry
1 answer:
Georgia [21]3 years ago
5 0

Answer:

In a neutral solution the concentration of hydrogen ions is equal to the concentration of hydroxide ions

Explanation:

When:

[H⁺] > [OH⁻]  the pH is acid, so the solution is practically acid.

When

[H⁺] < [OH⁻], the pH is basic, so the solution is practically basic

In neutral solutions:

[H⁺] = [OH⁻], so the pH is neutral (7)

pH > 7 → BASIC SOLUTIONS

pH < 7 → ACID SOLUTION

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how many grams of calcium oxide will be produced in a closed vessel containing 20.0 kg of calcium and 20.0 kg of oxygen gas if t
sergejj [24]

Answer:

27984.1311 g  

Explanation:

The formula for the calculation of moles is shown below:

moles = \frac{Mass\ taken}{Molar\ mass}

<u>For calcium :- </u>

Mass of calcium = 20.0 kg = 20000 g ( 1 kg = 1000 g )

Molar mass of calcium = 40.078 g/mol

Thus,

Moles= \frac{20000\ g}{40.078\ g/mol}

Moles\ of\ calcium= 499.0269\ mol

<u>For oxygen gas :- </u>

Mass of oxygen gas = 20.0 kg = 20000 g ( 1 kg = 1000 g )

Molar mass of oxygen gas = 31.999 g/mol

Thus,

Moles= \frac{20000\ g}{31.999\ g/mol}

Moles\ of\ oxygen\ gas= 625.0195\ mol

According to the given reaction:

2Ca+O_2\rightarrow 2CaO

2 moles of calcium reacts with 1 moles of oxygen gas

Also,

1 mole of calcium react with 1/2 mole of oxygen gas

So,

499.0269 mole of calcium react with \frac{1}{2}\times 499.0269 mole of oxygen gas

Moles of oxygen gas = 249.5135 moles

Available moles of oxygen gas = 625.0195 moles

Limiting reagent is the one which is present in small amount. Thus, calcium is limiting reagent.

The formation of the product is governed by the limiting reagent. So,

2 moles of calcium produces 2 moles of calcium oxide

So,

1 mole of calcium produces 1 mole of calcium oxide

Also,

499.0269 mole of calcium produces 499.0269 mole of calcium oxide

Moles of calcium oxide = 499.0269 moles

Molar mass of calcium oxide = 56.0774 g/mol

Mass of calcium oxide = Moles × Molar mass = 499.0269 × 56.0774 g = 27984.1311 g  

<u>27984.1311 g  of calcium oxide will be produced.</u>

8 0
3 years ago
What is the chemical name for F5N3
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Answer:

Fluorine azide or triazadienyl fluoride (FN3) is a yellow green gas composed of nitrogen and fluorine with formula FN3. It is counted as an interhalogen compound, as the azide functional group is termed a pseudohalogen. It resembles ClN3, BrN3, and IN3 in this respect.

Explanation:

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3 years ago
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A nanoparticle of pure metal A is a cube.
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Answer:

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Explanation:

l x w x h = volume

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