All categories

2 years ago

What is the pH of 3.65 grams of HCl dissolved in 1250 mL distilled H2O

Chemistry

1 answer:

slavikrds [6]2 years ago

6 0

Considering the definition of pH, the pH of 3.65 grams of HCl dissolved in 1250 mL distilled H₂O is 1.0969.

<h3>Definition of pH</h3>

pH is the Hydrogen Potential. It is a measure of acidity or alkalinity that indicates the amount of hydrogen ions present in a solution or substance.

Mathematically, pH is calculated as the negative base 10 logarithm of the activity of hydrogen ions:

pH= - log [H⁺]

The numerical scale that measures the pH of substances includes the numbers from 0 to 14. The pH value 7 corresponds to neutral substances. Acidic substances are those with a pH lower than 7, while basic substances have a pH higher than 7.

<h3>Concentration of HCl</h3>

Molar concentration or molarity is a measure of the concentration of a solute in a solution and indicates the number of moles of solute that are dissolved in a given volume.

The molarity of a solution is calculated by dividing the moles of solute by the volume of the solution:

$Molarity=\frac{number of moles}{volume}$

In this case, you know:

number of moles= $3.65 grams x\frac{1 mole}{36.45 grams} =$ 0.1 moles (being 36.45 g/mole the molar mass of HCl)
volume= 1250 mL= 1.250 L (being 1000 mL= 1 L)

Replacing in the definition of molarity:

$Molarity=\frac{0.1 moles}{1.250 L}$

Solving:

<u><em>Molarity= 0.08 </em></u> $\frac{moles}{liter}$ <u><em>= 0.08 M</em></u>

<h3>pH of the solution</h3>

Hydrochloric acid is a strong acid, so in aqueous solution it will be totally dissociated. So the concentration of protons is equal to the initial concentration of acid. This is: [H⁺]= [HCl]= 0.08 M

Replacing in the definition of pH:

pH= - log (0.08 M)

Solving:

Finally, the pH of 3.65 grams of HCl dissolved in 1250 mL distilled H₂O is 1.0969.

Learn more about

pH:

brainly.com/question/3992824

brainly.com/question/12200689

molarity:

brainly.com/question/9324116

brainly.com/question/10608366

brainly.com/question/7429224

You might be interested in

3H2 + blank, reaction arrow, 2NH3

Helga [31]

The complete equation representing the synthesis reaction for the formation of ammonia is: 3 H₂ + N₂ ⇒ 2 NH₃

<h3>What is a synthesis reaction?</h3>

It is a reaction in which 2 or more substances combine to form 1 product.

Let's consider the following incomplete synthesis reaction.

3 H₂ + ____ ⇒ 2 NH₃

According to Lavoisier's law, the mass and the elements must be conserved in a chemical reaction. So, since there is nitrogen to the right, the missing element to the left must be nitrogen. Molecular nitrogen is diatomic.

The complete reaction is:

3 H₂ + N₂ ⇒ 2 NH₃

The complete equation representing the synthesis reaction for the formation of ammonia is: 3 H₂ + N₂ ⇒ 2 NH₃

Learn more about synthesis reaction here: brainly.com/question/16560802

#SPJ1

7 0

2 years ago

Which of the following statements about steroid hormones is true?

Len [333]

Answer:

B. They bind to carrier proteins in order to be transported in the blood to

their target cells.

Explanation:

Steroid hormones are belongs to the class of chemical compound called steroid. Steroid hormones are majorly secreted by three glands - ovaries, testes and adrenal cortex.

Steroid hormones are released in the blood and are allowed to bind to the specific carrier proteins such as corticosteroid-binding globulin and albumin which helps them to carry to the target cells for the functioning.

The steroid hormone binds to receptor proteins in the target cell and not in the plasma membrane

Hence, the correct answer is "B. They bind to carrier proteins in order to be transported in the blood to their target cells."

8 0

3 years ago

"What quantitative measurement and qualitative observations can be made about the interactions of matter and energy?" can someon

kirza4 [7]

Quantitative measurements are numerical values, they involve amounts and units like measuring things. Qualitative observations appeal to the five senses, like what does the interaction look and sound like

5 0

4 years ago

Which electrolyte is used in an alkali fuel cell?

lyudmila [28]

Answer: an aqueous potassium hydroxide solution

An alkaline fuel cell is a zero-emission device whose one major component is the electrolyte. An electrolyte, on the other hand, is a solution that is able to conduct electricity. In an alkaline fuel cell. The electrolyte is an alkaline liquid, and potassium hydroxide also known as KOH is the only alkaline liquid among the choices.

8 0

3 years ago

Explain how the quantum mechanical model of the atom describes the electron structure of an atom

taurus [48]

Electrons<span> are NOT in circular orbits around nucleus. -The</span>atomic<span> orbital </span>describes<span> the probable location of the electrion </span>Quantum Mechanical Model of the Atom<span> Page 3 There are different kinds of </span>atomic orbitals<span> that differ in the amount of energy and shapes (where the </span>electron<span> probably is).

</span>

7 0

3 years ago