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2 years ago

Why are carboxylic acids more acidic than alcohols or alkynes? (choose all that apply)

Chemistry

1 answer:

wlad13 [49]2 years ago

6 0

Answer:

The answers are (A.) Carboxylate ions have resonance, while alkoxides and acetylides don't (D.) Both carboxylic acids and carboxylates have resonance stabilization

Explanation:

When alcohols or alkynes donate a proton (H+), they become alkoxides acetylides respectively. Carboxylic acids on the other hand form carboxylate ions.

Carboxylate ions are more stable than their alkoxide and acetylides counterparts, because they possess a resonance structure which disperses its negative charge and allows for the valence electrons to be effectively delocalized.

Hence, carboxylic are more acidic than alcohols or alkynes.

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Tarnish is Ag2S-silver sulfide and the oxidation state of silver is +1

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1 year ago

How many ethyne molecules are contained in 84.3 grams of ethyne (C2H2)?

ololo11 [35]

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1 year ago

Read 2 more answers

Consider the reaction cacn2 3 h2o → caco3 2 nh3 . how much nh3 is produced if 187 g of caco3 are produced?

shusha [124]

B ase from the reaction <span>cacn2 3 h2o → caco3 2 nh3, for every 1 mole of caco3 produced there 2 moles of nh3 being produced. to solved this, we must first convert the caco3 to moles.

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7 0

1 year ago

Exactly 56 grams of iron is mixed with 156 grams of oxygen. The elements are heated and they react. What best describes which re

Mars2501 [29]

Answer:

Explanation:

The chemical expression for the reaction between iron and oxygen is:

4Fe(s) + 3O₂ (g) $\to$ 2Fe₂O₃ (s)

The number of moles of Fe = mass of Fe/ molecular mass of Fe

The number of moles of Fe = 56 g/ 55.845 g/mol

The number of moles of Fe = 1.002 moles of Fe

The number of moles of oxygen = mass of oxygen/ molecular mass of oxygen

The number of moles of oxygen = 156 g /32 g/mol

The number of moles of oxygen = 4.875 moles of oxygen

Assume that Fe is the limiting reactant, the number of Fe₂O₃ can be calculated as:

moles of Fe₂O₃ = 1.002 mole of Fe × 2 moles of Fe₂O₃/ 4 moles of Fe

moles of Fe₂O₃ = 0.501 mole of Fe₂O₃

Assume that O₂ is the limiting factor, the number of Fe₂O₃ is:

moles of Fe₂O₃ = 4.875 moles of O₂ × 2 moles of Fe₂O₃/ 3 moles of O₂

moles of Fe₂O₃ = 3.25 mole of Fe₂O₃

Thus, after the reaction is complete, Fe and O₂ contain different moles of Fe₂O₃. Only Fe gets consumed in the reaction and it is the limiting factor.

8 0

1 year ago

What is the empirical formula of a substance that contains 0.117 mol of carbon, 0.233 mol of hydrogen, and 0.117 mol of oxygen?

Rzqust [24]

Empirical formula of a compound gives the proportions of the elements in that compound but it does not define the actual arrangement and number of atoms.

Let the empirical formula of compound be $C_{x}H_{y}O_{z}$ .

The ratio of number of moles of C, H and O can be calculated as follows:

$C:H:O=0.117:0.233:0.117$

Simplifying the ratio,

$C:H:O=\frac{0.117}{0.117}:\frac{0.233}{0.117}:\frac{0.117}{0.117}=1:1.99:1=1:2:1$

Thus, the value of x, y and z will be 1, 2 and 1 respectively.

Therefore, the empirical formula will be $CH_{2}O$ .

6 0

1 year ago