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In this equilibrium reaction, H2O donates a proton to NH3, which acts as a base: H2O (l) acid + NH3 (aq) base ⇌ NH + 4 (aq) acid + OH − (aq) base. Water is thus termed amphiprotic, meaning that it can behave as either an acid or a base, depending on the nature of the other reactant.
12 Ιουλ 2023 · In this equilibrium reaction, H2O donates a proton to NH3, which acts as a base: H 2O(aq)aicd + NH 3(aq)base ⇌ NH + 4 (aq)acid + OH − (aq)base. Water is thus termed amphiprotic, meaning that it can behave as either an acid or a base, depending on the nature of the other reactant.
19 Απρ 2023 · The equilibrium-constant expression for dissociation of the acid must be used explicitly. These general principles can be illustrated with a concrete example, that of calculating the pH of a solution of 0.0l00M acetic acid. As we saw in Example 5-4 for nitric acid, a strong acid, a 0.0100M solution has a pH of 2.00.
Water is an inorganic compound with the chemical formula H2O. It is a transparent, tasteless, odorless, [c] and nearly colorless chemical substance. It is the main constituent of Earth 's hydrosphere and the fluids of all known living organisms (in which it acts as a solvent [20]).
2 H2O (l)↔ H3O+ (aq) + OH– (aq) Kw = [H3O+] [OH–] = 1.0×10-14. Thus, we can calculate the missing equilibrium concentration. Rearrangement of the Kw expression yields that [OH −] is directly proportional to the inverse of [H 3 O +]: [OH–] = Kw/ [H3O+] = (1.0×10-14)/ (2.0×10-6 M) = 5.0×10-9 M.
17 Αυγ 2024 · In theory, it's easy to make water from hydrogen gas and oxygen gas. Mix the two gases together, add a spark or sufficient heat to provide the activation energy to start the reaction, and presto—instant water.
We start by rearranging the equilibrium constant expression for the dissociation of water to give the following equation. [H 3 O +] [OH -] = Kc x [H 2 O] 2. We then replace the term on the right side of this equation with a constant known as the waterdissociation equilibrium constant, Kw. [H 3 O +] [OH -] = Kw.
