Answer is: a bottle of acetic acid contains a solid.
Acetic or ethanoic acid (CH₃COOH) when undiluted is called glacial acetic acid.
Glacial acetic acid has freezing point (melting point) around 16.6°C, so it will be at solit state.
Vinegar is mixture of acetic acid (CH₃COOH) and water (H₂O). Vinegar is colourless liquid with sour taste and pungent smell, freezing point of the vinegar is lower than glacial acetic acid.
Acetic acid dissociate in aqueous solution to form hydrogen ions (H⁺) and acetic anion (CH₃COO⁻).
Balanced chemical reaction (dissociation):
CH₃COOH(aq) ⇄ CH₃COO⁻(aq) + H⁺(aq).
Answer:
. The authorities have closed the casino.(change in passive)
Answer:
a. endothermic reaction
Explanation:
In an endothermic reaction, heat is absorbed from the environment. This leaves the surrounding at a colder temperature compared to the system.
ΔH, the change in enthalpy is assigned a positive sign because the heat energy level of the final state is higher than that of the initial state.
Some examples are mostly dissolution substances in water.
There is no answer, science is about empirical knowledge, technology is the sum of techniques, skills, methods, and processes. I do not believe that you will find a answer for that.
