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patriot [66]
3 years ago
13

Adding solvent or removing solute from a soltuion is called __________, and a solution is said to be _______________ if it has m

ore solute.
Chemistry
1 answer:
xenn [34]3 years ago
7 0
Adding solvent or removing solute from a solution is called diluting. And a solution is said to be concentrated if it has more solute. The opposite of diluting is called concentrating. The measure of the amount of solute in a solution is expressed in concentration.
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The statement "Although sulfuric acid is a strong electrolyte, an aqueous solution of H2SO4 contains more HSO4− ions than SO42−
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The statement "Although sulfuric acid is a strong electrolyte, an aqueous solution of H₂SO₄ contains more HSO₄⁻ ions than SO₄²⁻ ions is <u>True.</u> This is best explained by the fact that H₂SO₄ <u>is a diprotic acid where only the first hydrogen completely ionizes.</u>

Why?

H₂SO₄ is a diprotic acid. That means that it has <u>two hydrogen ions</u> to give to the solution. The two dissociation reactions are shown below:

H₂SO₄ + H₂O → HSO₄⁻ + H₃O⁺

HSO₄⁻ + H₂O ⇄ SO₄²⁻ + H₃O⁺

As the arrows show, the first dissociation is complete, meaning that all the sulfuric acid that is present initially is dissociated into HSO₄⁻ and H₃O⁺. However, the second dissociation is incomplete, and it's actually an equilibrium with an acid constant  (Ka)of 1.2×10⁻².

That means that if the initial concentration of H₂SO₄ was 1M, the concentration of HSO₄⁻ is going to be 1M as well, but <u>the concentration of SO₄²⁻ is going to be much less than 1M</u>, according to the dissociation constant.

Have a nice day!

4 0
3 years ago
How to balance s+hno3=h2so4+no2+h2o
Alenkasestr [34]

1S+6HNO3=H2SO4+NO2+H20

7 0
3 years ago
Which of the following is the correct definition of an inherited behavior?
emmainna [20.7K]

Answer:

behaviors that are passed down genetically

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3 years ago
Label the sun. which layer of the sun is #7?
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Explanation:ah

7 0
3 years ago
Calculate the mass of oxygen gas (O2) dissolved in a 5.00 L bucket of water exposed to a pressure of 1.13 atm of air. Assume the
Ilia_Sergeevich [38]

Answer:

The mass of oxygen gas dissolved in a 5.00 L bucket of water exposed to a pressure of 1.13 atm of air is 0.04936 grams.

Explanation:

Henry's law states that the amount of gas dissolved or molar solubility of gas is directly proportional to the partial pressure of the liquid.

To calculate the molar solubility, we use the equation given by Henry's law, which is:

C_{gas}=K_H\times p_{gas}

where,

K_H = Henry's constant =

p_{O_2} = partial pressure of oxygen

We have :

Pressure of the air = P

Mole fraction of oxygen in air = \chi_{O_2}=0.210

p_{O_2}=P\times \chi_{O_2}

=0.210\times 1.13 atm= 0.2373 atm

K_H = Henry's constant = 1.30\times 10^{-3}M/atm

Putting values in above equation, we get:

C_{O_2}=1.30\times 10^{-3}M/atm\times 0.2373  atm\\\\C_{O_2}=0.003085 M

Moles of oxygen gas = n

Volume of water = V = 5 L

Molarity = \frac{Moles}{Volume(L)}

0.003085 M=\frac{n}{5 L}

n = 0.003085 M\times 5 L=0.001542 mol

Mass of 0.001542 moles of oxygen gas:

0.001542 mol × 32 g/mol = 0.04936 g

The mass of oxygen gas dissolved in a 5.00 L bucket of water exposed to a pressure of 1.13 atm of air is 0.04936 grams.

5 0
2 years ago
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