1. Which Base is stronger, the conjugate base of methane or the conjugate base o

Question

1. Which Base is stronger, the conjugate base of methane or the conjugate base of ethane?

2. Is sodium ethoxide( NaOCH2CH3) a strong enough base to deprotonate acetylene?

3. Is sodium ethoxide able to deprotonate methanol?

4. Is sodium methoxide able to deprotonate ethanol?

5. Which halide ion is NOT able to deprotonate HBr?

6. The acetylide ion cannot come into contact with water or it will deprrotonate.  As such, will the acetylide ion deprotonate ammonia?

7. Is methanethiol a strong enough acid to deprotonate water?

8. There is a mixture of equal parts water, methanol, and ethanol.  A very soluble unknown base is added to the solution in excess.  The conjugate acid of the unknown base has a pKa of 15.5.  Identify all components of the mixture that will be deprotonated.

9. Identify any one compound from the table that will be protonated by acetic acid,

10. Identify any one compound from the table that will be deprotonated by the hydride ion H-.

Which Base is stronger, the conjugate base of methane or the conjugate base of ethane? Is sodium ethoxide( NaOCH2CH3) a strong enough base to deprotonate acetylene? Is sodium ethoxide able to deprotonate methanol? Is sodium methoxide able to deprotonate ethanol? Which halide ion is NOT able to deprotonate HBr? The acetylide ion cannot come into contact with water or it will deprrotonate. As such, will the acetylide ion deprotonate ammonia? Is methanethiol a strong enough acid to deprotonate water? There is a mixture of equal parts water, methanol, and ethanol. A very soluble unknown base is added to the solution in excess. The conjugate acid of the unknown base has a pKa of 15.5. Identify all components of the mixture that will be deprotonated. Identify any one compound from the table that will be protonated by acetic acid, Identify any one compound from the table that will be deprotonated by the hydride ion H-.

Explanation / Answer

1.) methane is stronger acid => ethane conjugate base is stronger.

2.)ethanol is stronger acid then acetylene => No

3.)methanol is stronger acid => yes

4.)methanol is stronger acid => NO

5.) HI is strongest acid => I-

6.)water is stronger acid than acetylene but not ammonis =>NO

7.)methanethiol is stronger acid => NO

8.)only methanol is acidic enough : ONLY METHANOL

9.) any base below acetic acid on table : Ammonia NH3

10.)any acid above hydride in the table : ethanol C2H5OH

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