What do colligative properties depend on?

Answers

Answer 1

Answer: Colligative properties depend on the amount of solute dissolved in a solvent. These set of properties do not depend on the type of species present. These properties include freezing point depression, boiling point elevation, osmotic pressure and vapor pressure lowering.

Answer 2

Answer:

Answer:

Colligative properties depend on the quantity of solute and solvent and the identity of the solvent.

Explanation:

Colligative properties are defined as a set of intensive physical properties that result from the interactions between solute and solvent that form a solution. In this group of properties, we can find the freezing point depression, boiling point elevation, osmotic pressure, and vapor pressure lowering.

The mentioned properties dependon the amount of solute and solvent (concentration) and the nature of the solvent. this fact can be pictured by the freezing point depression formula:

$T_(f) _(solvent) -T_(f) _(solution) = K_(f) _(x) m$

where $T_(f) _(solvent)$ is the freezing point of the pure solvent, $T_(f) _(solution)$ is the freezing point of the solution, $K_(f)$ is the freezing point depression constant and m is the molality

In the equation, it can be seen that the change of temperature of the solution with respect to the pure solvent depends on the molality, which is the ratio of moles of solute and mass of solvent. Moreover, the change also depends on the freezing point depression constant that is a characteristic of the solvent.

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Which of the following is an extremely reactive family of elements?a. noble gases
c. carbon family
b. halogens
d. metalloids

Answers

Answer:

b. Halogens

Explanation:

Chemical reactions are associated with the 'breaking' of old bonds and formation of new bonds. Since valence electrons are the ones that participate bonding, therefore the reactivity of elements must depend on the ease with which these electrons can be lost or gained.

Noble gases have fully filled (n²np⁶) valence electron configuration and are highly stable and inert.

Carbon family have less that half filled p-orbitals (ns²np²) in their valence configuration and are not very reactive. Metalloids have their reactivity in between metals and non-metals.

Halogens in contrast have a valence electron configuration of ns²np⁵. They only need one more electron to complete their octet and become stable. As a result they are highly reactive i.e. they readily attract electrons and form new bonds.

The halogens are extremely reactive, because they only need ONE MORE valence electron till they become stable, meaning they would bond and be very reactive.

What mass of NaCl solid should be added to 100mL of pure water to produce a 6.00M solution?

Answers

Molar mass NaCl : 58.44 g/mol

Volume = 100 mL / 1000 = 0.1 L

Molarity = 6.00 M

M = n / V

6.00 = n / 0.1

n = 6.00 * 0.1

n = 0.6 moles

1 mole NaCl ( 58.44 g/mol) * 0.6

mass = 58.44 * 0.6

mass = 35.064 g

hope this helps!

When one compound dissolves in water, the only positive ion produced in the solution is H3O+(aq). This compound is classified as(1) a salt
(2) a hydrocarbon
(3) an Arrhenius acid
(4) an Arrhenius base

Answers

Answer : The correct option is, (3) an Arrhenius acid

Explanation :

According to the Arrhenius concept, an acid is a substance which ionizes in the water to give hydronium ion $(H_3O^+)$ or hydrogen ion $(H^+)$ and a base is a substance which ionizes in the water to give hydroxide ion $(OH^-)$ .

When one compound dissolves in water, then only positive ion produced in the solution is $(H_3O^+)$ . This compound is classified as an Arrhenius acid.

Hence, the correct option is, (3) an Arrhenius acid

When one compound dissolves in water, the only positive ion produced in the solution is (aq). This compound is classified as an Arrhenius acid.

A substance that is present in a reaction but not used up in the reaction is called a _____.

Answers

They are called spectator ions.

Why are x-rays telescopes and gamma-ray telescopes in space?

Answers

Because those can leak and cause cancer

Which statement correctly describes a solution with a pH of 9?(1) It has a higher concentration of H3O+ than OH– and causes litmus to turn blue.
(2) It has a higher concentration of OH– than H3O+ and causes litmus to turn blue.
(3) It has a higher concentration of H3O+ than OH– and causes methyl orange to turn yellow.
(4) It has a higher concentration of OH– than H3O+ and causes methyl orange to turn red.

Answers

A solution with a pH of 9 will have a higher concentration of $OH^-$ and will turn red litmus to blue.

What is pH

It is the degree of acidity or alkalinity of substances.

A pH of 7 is neutral, below 7 is acidic, and above 7 is alkaline or basic.

A base generally have $OH^-$ as the only negative ions when ionized in aqueous solutions. Bases also turn red litmus to blue.

Thus, a solution with a pH of 9 will have a higher concentration of $OH^-$ and will turn red litmus to blue.

More on pH can be found here: brainly.com/question/15289741

Answer: Option (2) is the correct answer.

Explanation:

It is known that when pH of a solution is less than 7 then the solution is acidic in nature and turns blue litmus into red. Whereas when pH of a solution is more than 7 then the solution is basic in nature and turns red litmus into blue.

Hydrogen ions can also be released in the form of hydronium ions ( $H_(3)O^(+)$ ).

And, when a solution has pH 9 then it means the solution is basic in nature.

That is, there will be more number of hydroxide or $OH^(-)$ ions as compared to hydrogen ions or $H_(3)O^(+)$ ions.

Thus, we can conclude that the statement it has a higher concentration of OH– than H3O+ and causes litmus to turn blue correctly describes a solution with a pH of 9.

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