Solubility of Alcohols and Phenols as Solvents

Q.

Are alcohols soluble in water?

Q.

What is Nonionic Surfactant?

Q. Which of the following statements is not true regarding the cis and trans isomers of 2-butene ?

1. They are configurational isomers.
2. They are diastereomers
3. The cis-isomer has higher dipole moment than the trans-isomer.
4. The cis isomer usually has a lower boiling point than the trans-isomer.

Q. among isomeric alcohols , solubility increases with branching.
How will the order for increasing solublity be for
n butyl alcohol, secondary butyl alcohol , iso butyl alcohol

pls explain with structures

Q. Solubility of alcohols and phenols in water is ____ to that of hydrocarbons of comparable molecular masses.

1. Greater than
2. similar
3. lesser than
4. none of these

Q.

The alcohol which is highly soluble in water is:

1. n- Butyl alcohol

2. Sec-Butyl alcohol

3. Isobutyl alcohol

4. Tert-Butyl alcohol

Q. Ethanal is soluble in water. Why?

Q.

Assertion: An aqueous solution of alcohol fails to conduct electricity.

Reason: Alcohol is an organic compound.

1. Both assertion and reason are correct and the reason is the correct explanation of the assertion.

2. Both assertion and reason are correct but the reason is not the correct explanation of the assertion.

3. The assertion is correct but the reason is incorrect

4. The assertion is incorrect but the reason is correct.

Q.

Name the factors responsible for the solubility of alcohols in water.

Q.

Explain why low molecular mass alcohols are soluble in water?

Q.

Alcohols are comparatively more soluble in water than hydrocarbons of comparable molecular masses. Explain this fact.

Q.

Which of the following gives a compound, which is soluble in alkali with benzene sulphonyl chloride

1. (C₂H₅)₂NH
2. C₂H₅NH₂
3. (C₂H₅)₃N
4. (CH₃)₂NH

Q. How will you obtain benzyl alcohol from benzaldehyde?

Q. Ortho-nitrophenol is less soluble in water than para and meta-nitrophenols because:

1. o- nitrophenol is more volatile in steam than those of m- and p- isomers.
2. o- nitrophenol shows intramolecular $H-$bonding.
3. o-nitrophenol shows intermolecular $H-$bonding.
4. none of these.

Q.

1. True
2. False

Q. Which of the following alcohols is the least soluble in water?

1. Ethanol
2. 1-Propanol
3. 1-Butanol
4. 1-Pentanol

Q. Which of the following alcohols reacts most readily with Lucas reagent?

1. $(C{H}_3{)}_{2}CHOH$
2. $(C{H}_3{)}_{3}COH$
3. $C{H}_{3}C{H}_{2}C{H}_{2}OH$
4. $C{H}_{3}C{H}_{2}OH$

Q. Explain how Alcohols of lower molecular mass are soluble in water.

Q. Assertion: Ethyl alcohol is soluble in organic solvents.
Reason: Ethyl alcohol has a non polar ethyl group.

1. Both Assertion and Reason are true and Reason is the correct explanation to Assertion
2. Assertion is true but Reason is false
3. Assertion is false but Reason is true
4. Both Assertion and Reason are true and Reason is not the correct explanation to Assertion

Q. Find the correct statement regarding physical propertises of cis/trans molecule :

1. polarity increases intermolecular forces thereby raising the temperature
2. symmetrical molecule because of better packing increases M.P.
3. both A and B
4. none of these

Q. the mole fraction of ethyl alcohol in its solution with methyl alcohol is0.8.theV.P of ethyl alcohol at this temp is 40mmHg. what is its V.P in solution if solution is ideal

Q. Which of the following phenols has lowest solubility in water?

1. Phenol
2. o-Nitrophenol
3. m-Nitrophenol
4. p-Nitrophenol

Q. Which of the following statement(s) is/are incorrect?

1. Solubility of ethers in water is comparitively higher than that of their isomeric alcohols
2. Boiling point of alcohols increases with increase in molecular mass
3. The higher boiling points of alcohols compared to ethers are due to hydrogen bonding
4. Boiling point of 1, 2-dihydroxybenzene is greater than that of 1, 4-dihydroxybenzene

Q. Which of the following soluble in water?

1. $C{H}_{3}OH$
2. $CHC{l}_3$
3. $CC{l}_4$
4. $C{S}_2$

Q. Primary, secondary and tertiary alcohol cannot be differentiated by:

1. reduced Cu
2. acidified $KMn{O}_4$
3. Lucas reagent
4. $PC{l}_3$

Q.

The boiling point of ethanol is higher than that of methoxymethane.Explain

Q. Which of the following is not a characteristic of alcohol ?

1. Lower members have a pleasant smell and burning taste, higher members are colourless and tasteless.
2. Lower members are insoluble in water and organic solvents but the solubility regularly increases with molecular mass.
3. They are lighter than water.
4. Their boiling points rise fairly uniformly with rising molecular weight.
5. Higher members have a pleasant smell and burning taste, lower members are colourless and tasteless.

Q. Assertion :The solubility of n-alcohol in water decreases with an increase in molecular weight. Reason: The reactive proportion of the hydrocarbon part in alcohols increases with increasing molecular weight which permits enhanced hydrogen bonding with water.

1. Statement I is true; Statement II is true; Statement II is the correct explanation of Statement I.
2. Statement I is true; Statement II is true; Statement II is not the correct explanation of Statement I.
3. Statement I is true; Statement II is false.
4. Statement I is false; Statement II is true.

Q. Give reasons :
o-nitrophenol is more volatile than p-nitrophenol

Q. Alcohols of low molecular weight are:

1. soluble in water
2. soluble in water on heating
3. insoluble in water
4. insoluble in all solvents.