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Bingel [31]
3 years ago
6

Which of the following represents the ester functional group?

Chemistry
2 answers:
Komok [63]3 years ago
5 0

Answer:

D. C=O

Explanation:

Esters are formed by the condensation of alcohols and acids with minus water. During the reaction, at least one -OH group is replaced by an O- alkyl group. The resulting compound is an ester and has a characteristic fruity smell. Its functional group is C=O

Dahasolnce [82]3 years ago
3 0

Answer: A. -COO-

Explanation:

Functional groups are specific group of atoms within molecules that are responsible for the characteristic chemical reactions of those molecules.

A. Esters have functional group -O=C-OR.

Example: methyl ethanoate with molecular formula CH_3COOCH_3

B. Aledydes have functional group -O=CH.

Example: Ethanal with molecular formula CH_3CHO

C. Acids have functional group -O=C-OH.

Example: Ethanoic acid with molecular formula CH_3COOH

D. Ketones have functional group -C=O.

Example: Propanone with molecular formula CH_3COCH_3

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7 0
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6 0
3 years ago
Write the equilibrium constant expression for this reaction: CH3OH (aq)+Cl-(aq)-> CH3Cl(aq)+OH-(aq)
bulgar [2K]

Answer: K_c=\frac{[CH_3Cl]\times [OH^-]}{[CH_3OH]\times [Cl^-]}

Explanation:

Equilibrium constant is the ratio of the concentration of products to the concentration of reactants each term raised to its stochiometric coefficients. Pure solids are assumed to have a concentration of 1.

The given balanced equilibrium reaction is:

 CH_3OH(aq)+Cl^-(aq)\rightleftharpoons CH_3Cl(aq)+OH^-(aq)

The expression for equilibrium constant for this reaction will be,

K_c=\frac{[CH_3Cl]\times [OH^-]}{[CH_3OH]\times [Cl^-]}

Thus the equilibrium constant expression for this reaction is K_c=\frac{[CH_3Cl]\times [OH^-]}{[CH_3OH]\times [Cl^-]}

5 0
3 years ago
How many moles of malachite should be formed when 1.5 moles of copper sulphate reacts with an excess of sodium carbonate?
Katen [24]
2 Na₂CO₃ + 2 CuSO₄ + H₂O → CuCO₃.Cu(OH)₂ + 2 Na₂SO₄ + CO₂
Malachite molar mass = 221.1 g / mol
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so 1.5 mole CuSO₄ produce (0.75) mole malachite
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