In the metal oxide, the mass fraction of the trivalent metal is 52.94%. Find the formula for this oxide.
| September 3, 2021 | education
Let us denote the molar mass of the metal through x. Next, we use the following formula for the reaction.
W = M / M in-va * _100%.
Next, we substitute the formula.
W = 2x / (2x + 3 * 16).
(2x + 48) * 0.5294 = 2x.
Expand the brackets and perform the multiplication action.
1.0588 x + 25.4112 = 2 x.
2x – 1.0588 x = 25.4112.
0.9412 x = 25.4112
Let’s define the unknown value.
X = 25.4112 / 0.9412 = 26.99 g / mol.
Therefore, it is trivalent with a molecular weight of 26.99 g / mol.
Answer: This element is called aluminum oxide.
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