The element forms a higher oxide of composition EO3. With hydrogen, this element forms a volatile compound

| December 21, 2020 | education

The element forms a higher oxide of composition EO3. With hydrogen, this element forms a volatile compound, the mass fraction of hydrogen in which is 5.88%. Determine the atomic mass of the element and name it.

Based on the formula of the higher oxide of the element, we can conclude that the highest oxidation state of this element is +6 and it is in group VI
Thus, the oxidation state in the hydrogen compound is equal to the lowest oxidation state of the element, i.e. 6-8 = -2
This means that the formula of a hydrogen compound looks like this H2E
Let’s compose the ratio (the calculation is carried out per 100 grams of the substance):
2: 1 = 5.88 / 1: 94.12 / M (E)
188.24 / M (E) = 5.88
M (E) = 32
We find in PSCE an element with a molar mass of 32, and we conclude that the sought element is sulfur.



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