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trasher [3.6K]
2 years ago
5

Which of these liquids are solutions? Check all that apply.

Chemistry
2 answers:
Semmy [17]2 years ago
7 0

Answer:

B. Salt water

C. Soda

D. Orange Juice

E. coffee

Explanation:

A solution is a type of the homogeneous mixture which is composed of two or more substances. The specie which is dissolved into the another substance is known as solute and in which it is dissolved is known as a solvent.

A compound is the substance which is formed when two or more elements are bonded together chemically.  Thus, Water is a compound.

Soda, salt water, orange juice and coffee are homogeneous mixtures. Soda consists of gas which is dissolved in it. Orange juice is also a solution as it contain pulp or other biomolecules dissolved in it. Coffee is made up of milk which have solutes dissolved in it. Salt water is also a solution.

<u>Hence, the answer is:-</u>

<u>B. Salt water </u>

<u>C. Soda </u>

<u>D. Orange Juice </u>

<u>E. coffee</u>

andrey2020 [161]2 years ago
4 0
Salt watersodaorange juice<span>coffee</span>
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III. For the following four sections: If you are given the formula, name the
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16. The same applies here. Ca is Calcium and Cl is Chlorine but since its the non-metal at the end, it ends in -ide. So Calcium chloride.

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Which best explains why ionization energy tends to decrease from the top to the bottom of a group?
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Which of the following acids is the WEAKEST? The acid is followed by its Ka value.HF, 3.5 × 10^-4HNO2, 4.6 × 10^-4HCN, 4.9 × 10^
Mila [183]

Answer:

HCN

Explanation:

There are several factors that can tell us when an acid is stronger than another, which are the following:

1. The Polarity of the X - H Bond

2. Size of the X atom.

3. Charge on the acid.

4. Oxidation state of the central atom

5. Values of Ka and pKa.

From all of this factors, we can see that the exercise is already giving us values of Ka, and also we have different types of acid, not only with the form H - X

So, we will base the force of an acid by it's pKa value.

The pKa value which is calculated with the expression:

pKa = -logKa

pKa is a value that indicates how strong is the acid you are working with. This value can vary depending on factors such the charge of the acid. I f this charge can be easily distributed in resonance structures, the compound is more acidic, and therefore the pKa value is lower.

The lower the pKa, the more acidic the compound is.

So calculating the pKa on every structure we have:

HF: pKa = -log(3.5x10^-4) = 3.46

HNO2: pKa = -log(4.6x10^-4) = 3.34

HCN: pKa = -log(4.9x10^-10) = 9.31

HCOOH: pKa = -log(1.8x10^-4) = 3.74

HClO2: -log(1.1x10^-2) = 1.96

So according to all this values, we can conclude that the weakest acid is the HCN

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