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
evablogger [386]
4 years ago
14

Select the best explanation for why methanol, CH3OH, cannot be used as a solvent for the deprotonation of a terminal alkyne by s

odium amide, NaNH2.
A. Methanol is more acidic than the alkyne and will be deprotonated instead.

B. Methanol is toxic, and should be avoided when possible.

C. Sodium amide in methanol reduces alkynes to alkenes.

D. Methanol is a poor solvent for dissolving alkynes.

E. Sodium amide is not a strong enough base to deprotonate the alkyne.
Chemistry
1 answer:
DiKsa [7]4 years ago
5 0

Answer:

Methanol is more acidic than the alkyne and will be deprotonated instead.

Explanation:

pK_{a} of methanol is around 15 and pK_{a} of terminal alkyne is around 26.

pK_{a}=-logK_{a}, where K_{a} is acid dissociation constant

So, higher the acidity of an acid, higher will its K_{a} value and thereby lower will be its pK_{a} value.

So, methanol is certainly stronger acid than terminal alkyne.

Hence sodium amide preferably deprotonates methanol instead of terminal alkyne.

Hence, option (A) is correct.

You might be interested in
Creatinine, , is a by-product of muscle metabolism, and creatinine levels in the body are known to be a fairly reliable indicato
kherson [118]

Answer:

Molality = 0.0862 mole/kg

Explanation:

Molality = (number of moles of solute)/(mass of solvent in kg)

Number of moles of solute = (mass of Creatinine in the blood sample)/(Molar mass of Creatinine)

To obtain the mass of creatinine in 10 mL of blood. We're told that 1 mg of Creatinine is contained in 1 decilitre of blood.

1 decilitre = 100 mL

1 mg of Creatinine is contained in 100 mL of blood

x mg of Creatinine is contained in 10 mL of blood.

x = (1×10/100) = 0.1 mg = 0.0001 g

Molar mass of Creatinine (C₄H₇N₃O) = 113.12 g/mol

Number of moles of Creatinine in the 10 mL blood sample = (0.0001/113.12) = 0.000000884 moles

Mass of 10 mL of blood = density × volume = 1.025 × 10 = 10.25 mg = 0.01025 g = 0.00001025 kg

Molality of normal creatinine level in a 10.0-ml blood sample = (0.000000884/0.00001025)

Molality = 0.0862 moles of Creatinine per kg of blood.

Hope this Helps!!!

7 0
3 years ago
Equation is balanced already
mojhsa [17]

Answer:

1.) 13 g C₄H₁₀

2.) 41 g CO₂

Explanation:

To find the mass of propane (C₄H₁₀) and carbon dioxide (CO₂), you need to (1) convert mass O₂ to moles O₂ (via molar mass), then (2) convert moles O₂ to moles C₄H₁₀/CO₂ (via mole-to-mole ratio from equation coefficients), and then (3) convert moles C₄H₁₀/CO₂ to mass C₄H₁₀/CO₂ (via molar mass). It is important to arrange the ratios in a way that allows for the cancellation of units. The final answers should have 2 sig figs to match the sig figs of the given value.

Molar Mass (C₄H₁₀): 4(12.011 g/mol) + 10(1.008 g/mol)

Molar Mass (C₄H₁₀): 58.124 g/mol

Molar Mass (CO₂): 12.011 g/mol + 2(15.998 g/mol)

Molar Mass (CO₂): 44.007 g/mol

Molar Mass (O₂): 2(15.998 g/mol)

Molar Mass (O₂): 31.996 g/mol

2 C₄H₁₀ + 13 O₂ ----> 8 CO₂ + 10 H₂O

 48 g O₂             1 mole             2 moles C₄H₁₀            58.124 g
---------------  x  -----------------  x  -------------------------- x  ------------------  =  
                         31.996 g              13 moles O₂               1 mole

=  13 g C₄H₁₀

 48 g O₂             1 mole               8 moles CO₂            44.007 g
---------------  x  -----------------  x  -------------------------- x  ------------------  =  
                         31.996 g              13 moles O₂               1 mole

=  41 g CO₂

6 0
2 years ago
Which one is the right one​
olga_2 [115]

Answer:

B

Explanation:

6 0
3 years ago
How many moles of molecules are there in 18 grams of hydrogen. Pls help fast ASAP​
sattari [20]

Answer:

It is equal to Avogadro's number (NA), namely 6.022 x1023.

8 0
3 years ago
Read 2 more answers
In a redox reaction what happens to a substance's charge when it is oxidized
Temka [501]
<span>oxidizing substance removes electrons from another substance, which are then added to itself, the oxidizing substance becomes “reduced” (more negative). And because it “accepts” electrons .</span>
5 0
3 years ago
Other questions:
  • Repeating units in an organic compound are called
    7·2 answers
  • If the initial concentrations are {Pb(CH3CO2)2} = 0.165 M and {NH4I} = 0.466 M, how many grams of PbI2 will precipitate out of s
    13·1 answer
  • Provide three different examples of how minerals can form on earth
    10·1 answer
  • What is the chemical name for the compound If5
    11·2 answers
  • Which of the following statements is true about natural gas? It can be used directly in homes. It does not pollute the atmospher
    15·1 answer
  • How many moles of kcl are produced from 2.00 moles of k and excess cl2?​
    10·1 answer
  • What is the molar mass of the following compound: C1H3P2
    5·1 answer
  • Why is unit of pressure called a derived unit ?? 2) how do you measure the volume of milk?<br>​
    9·1 answer
  • Balancing Chemical Equations method3- the algebraic method
    9·1 answer
  • What happens to the atomic mass of the elements moving from left to right within a period?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!