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Nitric acid can be made by reacting nitrogen dioxide, NO 2, with water. 3 NO 2 (g) + H 2 O (l) → 2 HNO 3 (aq) + NO (g) Nitric acid reacts with most metals, but the details depend on the concentration of the acid and the nature of the metal. Dilute nitric acid behaves as a typical acid in its reaction with most metals.
14 ago 2020 · The pKb of ammonia is 4.75 at 25°C. Answer. As shown in part (b) in Figure 17.4.3, the titration curve for NH3, a weak base, is the reverse of the titration curve for acetic acid. In particular, the pH at the equivalence point in the titration of a weak base is less than 7.00 because the titration produces an acid.
Its conjugate acid is H 2 CO 3, and its conjugate base is CO 32–. The use of conjugate acid-base pairs allows us to make a very simple statement about relative strengths of acids and bases. The stronger an acid, the weaker its conjugate base, and, conversely, the stronger a base, the weaker its conjugate acid.
The most straightforward definition is that an acid is a molecular compound that contains one or more hydrogen atoms and produces hydrogen ions (H+) ( H +) when dissolved in water. Figure 7.3.1 7.3. 1: (A) Vinegar comes in a variety of types, but all contain acetic acid. (B) Citrus fruits like grapefruit contain citric and ascorbic acids.
ACID transactions ensure the highest possible data reliability and integrity. They ensure that your data never falls into an inconsistent state because of an operation that only partially completes. For example, without ACID transactions, if you were writing some data to a database table, but the power went out unexpectedly, it's possible that ...
Sulfuric acid is the strongest acid on our list with a pK a value of –10, so HSO 4-is the weakest conjugate base. You can see that hydroxide ion is a stronger base than ammonia (NH 3), because ammonium (NH 4 +, pK a = 9.2) is a stronger acid than water (pK a = 14.00). The stronger the conjugate acid, the weaker the conjugate base.
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