Answer:
a. True
Explanation:
Yes, the titration curve can determine or can reveal the pKa value of a weak acid.
Titration is a scientific method to estimate the dissolved substance concentration, known as the titrand, in a known volume when it reacts with another chemical substance of known volume as well as concentration. The other substance is known as Titrant.
When a weak acid like acetic acid is titrated to a very strong base such as NaOH, the titration curve is obtained and the pH value is noted. But the titration curve of any weak acid shows a characteristic shape. At the end of titration, the acetic acid will convert into acetate ions.
pKa is the negative logarithm of the Ka of the acid. pKa is the pH of the acid where the concentration of the weak acid as well as the conjugate base is in equimolar concentration.
Nuclear energy
Nuclear reactors use fission, or the splitting of atoms, to produce energy. Nuclear energy can also be produced through fusion, or joining (fusing) atoms together.
Answer:
There are seven main taxonomic ranks: kingdom, phylum or division, class, order, family, genus, species. In addition, domain (proposed by Carl Woese) is now widely used as a fundamental rank, although it is not mentioned in any of the nomenclature codes, and is a synonym for dominion (lat.
Explanation:
The partial pressure of CO is 0.536 atom.
<h3>Further Explanation</h3>
Dalton's Law of Partial Pressure states that the total pressure of a mixture of non-reacting gases is equal to the sum of the partial pressures of the individual gases. Mathematically, it can be represented as follows:
If the total pressure is known as well as the number of moles of the gases in the mixture, the partial pressure of a component as can be calculated using the equation below:
where:
Pₓ is the partial pressure of gas X
P(total) = total pressure of the mixture
nₓ = number of moles of gas X
n(total) = total number of moles of gas
To solve the problem, first sort the given:
- n(total) = 0.220 mol CO + 0.350 mol F₂ + 0.640 mol He = <u>1.21 moles</u>
- n(CO) = 0.220 mol
- P(total) = 2.95 atm
Then we plug in the given values into the equation above:
<h3>Learn More</h3>
- Ideal Gas Law brainly.com/question/12936013
- Root Mean Square brainly.com/question/5980325
Keywords: Dalton's Law of Partial Pressure, mole ratio