Search results
The equivalent weight of an element is the mass of a mole of the element divided by the element's usual valence. That is, in grams, the atomic weight of the element divided by the usual valence. [2] For example, the equivalent weight of oxygen is 16.0/2 = 8.0 grams. ).
8 mar 2020 · The general number of equivalents formula is. E = MW/charge number. Where MW is the molecular weight of the compound and charge number is the number of proton- or hydroxide-equivalents the compound contains. Examples with different acids and bases help illustrate how this works in practice.
19 kwi 2024 · Gram equivalent weight is the equivalent weight given in mass units. The calculated equivalent weight and the gram equivalent weight are equal numerically. E q = MW / n
29 lip 2021 · Gram equivalent mass is defined as the mass of an element (compound or ion) that combines or displaces 1.008 g hydrogen or 8 g oxygen or 35.5 g chlorine. Consider the following reaction: Zn + H 2 SO 4 → ZnSO 4 + H 2. In this reaction 1 mole of zinc (i.e. 65.38 g) displaces one mole of hydrogen molecule (2.016 g).
Equivalent weight focuses on the reactive capacity of a substance, while gram equivalent emphasizes the weight of a substance that is chemically equivalent to one mole of hydrogen ions or hydroxide ions.
The formula to calculate the equivalent mass of an element is given by \[\text{Equivalent Mass}=\dfrac{\text{Atomic Mass}}{\text{Valency}}.\] Sometimes if we don't know the valency of the atom, we cannot find the equivalent mass.
The equivalent weight of an element is its gram atomic weight divided by its valence (combining power). Some equivalent weights are: silver (Ag), 107.868 grams (g); magnesium (Mg), 24.312/2 g; aluminum (Al), 26.9815/3 g; and sulfur (S, in forming a sulfide), 32.064/2 g.
