1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
hodyreva [135]
3 years ago
14

Why is it easier to deprotonate alkynes compared to alkanes and alkenes?​

Chemistry
1 answer:
8090 [49]3 years ago
4 0

Answer:

The acetylinic hydrogen atom is more acidic than the olefinic hydrogen atoms or hydrogen atoms attached to alkanes.

Explanation:

The acidity of a terminal alkyne is as a result of the high level of s character in the sp hybridized orbital, which bonds with the s orbital of the hydrogen atom to form a single bond. This very high level of s character in an sp‐hybridized carbon causes the region of overlap the σ bond to shift much closer to the carbon atom. This effect leads to a polarization the bond, causing the hydrogen atom to become slightly positive. This slight positive charge makes the acetylinic hydrogen atom a weak proton, which can be removed by a strong base.

In the case of alkanes and alkenes, the s character in the hybridized carbon bonds is much less than that of the acetylinic bond, resulting in fewer electronegative carbon atoms and a corresponding lesser shift of electron density toward those atoms in the overlap region of the σ bond. The location of the overlap region makes the corresponding hydrogen atoms less electron deficient and thus less acidic than the acetylinic hydrogen. In reality, the hydrogen atoms bonded to alkanes and alkenes can be removed as protons, but much stronger nonaqueous bases are necessary.

You might be interested in
Which of the following is a way that some animals bodies adapt to living in extremely cold climates
HACTEHA [7]
B hibernation but it deppends on the animal
7 0
3 years ago
Read 2 more answers
Help me plzz I need help can someone help
ss7ja [257]
D volcanic corruption
3 0
3 years ago
If a car passes a pedestrian, a change in pitch is __________.
enot [183]
Given two questions:

<span>1) If a car passes a pedestrian, a change in pitch is ______________. 
The answer is the change in pitch is perceived by the pedestrian since he is the one in a relatively constant position compared to the car passing. 

2) </span><span>In the Doppler Effect lab, which statement best describes what you demonstrated about speed and pitch?

The answer is 'speed and direction affect pitch'.</span>
6 0
3 years ago
Read 2 more answers
The second stage of photosynthesis produces _____ and _____.
lukranit [14]
The second stage of photosynthesis also called Calvin stage produces glucose

5 0
3 years ago
Read 2 more answers
Which of the following correctly lists the five atoms in order of increasing size (smallest to
ICE Princess25 [194]

Answer:

F - O - S - Mg - Ba

Explanation:

as you move left to right on the periodic table the number of electrons increase.

7 0
3 years ago
Other questions:
  • You wish to make a 0.339 m h2so4 solution from a stock solution of 12.0 m h2so4. how much concentrated acid must you add to obta
    12·1 answer
  • A cube 20 cm on one side could contain how many milliliters of fluid
    13·2 answers
  • 115 grams of solid aluminum perchlorate are dissolved in 504 ml of water at 20°C. Calculate the concentration of aluminum perchl
    15·1 answer
  • How many grams of hydrochloric acid and required to react completely with 61.8 grams of calcium hydroxide when they produce calc
    10·1 answer
  • One gram of liquid benzene is burned in a bomb calorimeter. The temperature before ignition was 20.826 ℃, and the temperature af
    9·1 answer
  • Work = Force x Distance, calculate the amount of work done on an object
    5·1 answer
  • Heat from a fire is an example of?<br> a Radiation<br> b Conduction<br> c Convection
    8·2 answers
  • A 66.4 gram sample of Ba(ClO4)2 3 H2O was heated thoroughly in a porcelain crucible, until its weight remained constant. After h
    12·1 answer
  • Which elements make up a water molecule?
    11·2 answers
  • What is the name for potassium oxide's structure? Give two properties of potassium oxide.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!