Which yields H+(aq) as the only positive ion in an aqueous solution?(1) CH3CHO (2) CH3CH2OH (3) CH3COOH (4) CH3OCH3

Chemistry

2 answers:

ioda3 years ago

7 0

Answer:The correct answer is option (3).

Explanation:

Carboxylic acid gives $H^+$ ions in their aqueous solution.

$RCOOH\rightleftharpoons RCOO^-+H^+$

$CH_3COOH\rightleftharpoons CH_3COO^-+H^+$

Carbonate ion formed is stabilized due to resonance.

Whereas aldehyde in their aqueous solution do not give $H^+$ ions.

Alcohol in their aqueous solution do not give $H^+$ ions.

Ether in their aqueous solution do not give $H^+$ ions.

Arte-miy333 [17]3 years ago

5 0

If H+ would have to dissociate from a substance and must be the only positive ion in the solution that substance must be an acid.
CH3CHO is an aldehyde called acetaldehyde.
CH3CH2OH is an alcohol called ethanol
CH3OCH3 is an ether called dimethyl ether.
and finally, the answer CH3COOH is a weak acid called acetic acid.

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draw the lewis structure for CO2, H2CO3, HCO3-, and CO3 2-.Rank these in order of increasing attraction to water molecules. Expl

gavmur [86]

Answer:

The structures are attached in file.

Hydrogen bonding and intermolecular forces is the reason for ranks allotted.

Explanation:

In determining Lewis structure, we calculate the overall number of valence electrons available for bonding. Making carbon (the least electronegative atom) the central atom in the structure, we allocate valence electrons until each atom has achieved stability.

In order of decreasing affinity to water molecules:

$CO_{3}^{2-} > HCO_{3} ^{2-} > H_{2} CO_{3}$

This is due to the fact that the $CO_{3}^{2-}$ will accept protons more readily than the bicarbonate ion, $HCO_{3} ^{2-}$ . Carbonic acid, $H_{2} CO_{3}$ will not accept any more protons, hence it is the least attractive to water molecule, even though soluble.