Carboxylic acids: considered as weak acids due to they ionize in solution to give -COO⁻ and H⁺, they are abundant in nature, they can form intermolecular hydrogen bonds so they exist as dimers (remember that alcohols also can form hydrogen bonds).
- Acids have higher boiling and melting points than corresponding molar mass compounds due to the formation of hydrogen bond
- Aromatic carboxylic acids are solids in nature at room temperature
<h3><u>Answer;</u></h3>
a. CH3CO2H
<h3><u>Explanation;</u></h3>
- An Arrhenius acid is a substance that dissociates in water to form hydrogen ions or protons. In other words an Arrhenius acid increases the concentration of H+ in aqueous solution.
- Acetic acid (CH3CO2) dissociates in aqueous solution to form hydrogen ions (H⁺) and acetic anion (CH₃COO⁻). Therefore, it is an Arrhenius acid.
- The equation of dissociation;
CH₃COOH(aq) ⇄ CH₃COO⁻(aq) + H⁺(aq).
Answer:
solid density = 3.85 g/mL
Explanation:
First we calculate the mass of the benzene:
benzene mass = 63.29 - 25 = 38.29 g
We know that density = mass / volume
So the volume of benzene will be:
volume = mass / density
volume = 38.29 / 0.880 = 43.51 cm³ = 43.51 mL of benzene (1 cm³ = 1 mL)
Now the volume of the sample will be:
sample volume = 50 - 43.51 = 6.49 mL
Now we can calculate the density of the solid:
density = mass / volume
solid density = 25 / 6.49 = 3.85 g/mL
Le Chatelier principle says, if a restriction is applied to a system in equilibrium, the system adjusts to a new equilibrium that tends to counteract the restriction. When equilibrium is under stress it will shift to relieve that stress.
or
all concentrations would change.