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Equivalent Weight—Equivalent weight, EW, may be thought of as the mass of metal in grams that will be oxidized by the passage of one Faraday (96 489 6 2 C (amp-sec)) of electric charge. ( More information can be obtained from the ASTM )
In chemistry, equivalent weight (also known as gram equivalent [1] or equivalent mass) is the mass of one equivalent, that is the mass of a given substance which will combine with or displace a fixed quantity of another substance.
30 sty 2023 · Equivalent weight is the ratio of molecular mass and valence factor. It can be calculated by knowing the valence factor for acids and bases, which are the number of replaceable hydrogen and hydroxyl groups, respectively.
Definitions of Equivalent Weight ( Acid-Base Context ) The weight of a compound that contains ONE EQUIVALENT of a proton (for acid) or ONE EQUIVALENT of an hydroxide (for base). Examples: (1) H 2 SO 4 + 2OH - = 2H 2 O + SO 42-. Molecular weight of sulfuric acid (H 2 SO 4) = 98.07 g/mol.
The equivalent masses of acids, bases, and salts are calculated as follows: Equivalent mass of an acid = molecular mass of the acid/basicity. Equivalent mass of a base = molecular mass of the base/acidity. Equivalent mass of a salt = molecular mass of the salt/total positive valency of metal atoms.
25 cze 2016 · Equivalent weight is defined as “ The number of parts by weight of any element that combine with (or displace) directly or indirectly, 1.008 parts by weight of Hydrogen or 8 parts by weight of oxygen or 35.5 parts by weight of chlorine.” Lets illustrate some examples: C+ O 2 → CO 2.
Calculating equivalent mass. The equivalent of a substance, also known as the equivalent quantity of a substance, refers to the quantity of a substance that interacts with one mole of hydrogen ions (in an acid–base reaction) or electrons (in a redox reaction). Equivalent masses are necessary ...
