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3 years ago

At STP, which of these substances is most soluble in H2O? (1) CCl4 (3) HCl (2) CO2 (4) N2

Chemistry

2 answers:

lorasvet [3.4K]3 years ago

8 0

Answer: Option (3) is the correct answer.

Explanation:

It is known that like dissolves like that is, a polar solvent will dissolve only polar compounds. Whereas a non-polar solvent will dissolve only non-polar compound.

Substances whose atoms have large difference in electronegativities are polar in nature. Water is a polar solvent and it is able to dissolve polar molecules.

For example, HCl is a polar or ionic compound so it is soluble in water.

On the other hand, $CCl_{4}$ , $CO_{2}$ , and $N_{2}$ are all non-polar as bond between them is formed due to sharing of electrons.

Hence, we can conclude that at STP, HCl is the substance that is most soluble in $H_{2}O$ .

san4es73 [151]3 years ago

4 0

The correct answer is option 3. Hydrochloric acid is the most soluble in water at standard temperature and pressure because it is has a polar covalent bond which makes it a polar molecule. Water is also a polar substance therefore hydrochloric acid will really be soluble in water.

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Hydrogen atoms fuse together to form helium atoms. This releases a huge amount of energy in the form of _______ and ______. (cal

WARRIOR [948]

Answer:

Hydrogen atoms fuse together to form helium atoms. This releases a huge amount of energy in the form of Kinetic energy of the alpha particle and Electromagnetic radiation.

Explanation:

Nuclear Fusion is the Nuclear process in which the energy is produced when two lighter elements are collided together which are having some kinetic energy in them after that the two lighter nuclei will fuse together into a single heavier nuclei. This is opposite to what happens in Fission process in which the breaking up of atomic specie happens.

Both Nuclear Fission and Nuclear fission occurs with the release of massive amount of energy.

There are conditions for nuclear fusion to happens like, it requires 100 million's kelvin of temperature, also fusion will occur when the pressure is very high because increased pressure will result into squeezing of the atomic specie and hence they will fuse.

When the Hydrogen atom fuse together to form helium atoms. This release a huge amount of energy in the form of Kinetic energy of the alpha particle and Electromagnetic radiation.

7 0

3 years ago

If a balloon contains 3.00 L of air that has a pressure of 36.74 psi, what is the gas volume (the volume of the balloon) once it

Troyanec [42]

Answer:

7.5 L

Explanation:

At constant temperature and number of moles, Using Boyle's law

${P_1}\times {V_1}={P_2}\times {V_2}$

Given ,

V₁ = 3.00 L

V₂ = ?

P₁ = 36.74 psi = 2.5 atm (Conversion factor, 1 psi = 0.068046 atm)

P₂ = 1 atm (Atmospheric pressure as it comes to surface)

Using above equation as:

${P_1}\times {V_1}={P_2}\times {V_2}$

${2.5\ atm}\times {3.00\ L}={1\ atm}\times {V_2}$

${V_2}=\frac{{2.5}\times {3.00}}{1}\ L$

${V_2}=7.5\ L$

6 0

3 years ago

You may have to recrystallize any or all of the components of your extraction mixture, benzoic acid, ethyl-4-aminobenzoate and f

hjlf

Answer:

the Recrystallization solvents are;

-Sodium Hydroxide Base (NaOH)

- Hydrochloric Acid (HCl)

- Sand bath when acidic and basic components are removed.

Explanation:

Recrystallization is simply a technique used to purify an impure compound in a solvent.

Now, we want to purify the mixture of benzoic acid, Ethyl-4-aminobenzoate and fluorenone.

For the benzoic acid, it can be separated out of the mixture by addition of sodium hydroxide base (NaOH).

The Ethyl - 4 - aminobenzoate will be separated from the mixture by the addition of Hydrochloric Acid (HCl).

The fluorenone would be separated out by heating the mixture in a sand bath after the basic and acidic components have already been extracted out.

Thus, the Recrystallization solvents are;

-Sodium Hydroxide Base (NaOH)

- Hydrochloric Acid (HCl)

- Sand bath when acidic and basic components are removed.

6 0

3 years ago

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MissTica

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3 years ago

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Naddik [55]

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