In monovalent metal carbonate, the mass fraction of carbon as an element is 11.32%. Determine the carbonate.
| February 22, 2021 | education
General formula of unknown monovalent metal carbonate: M2CO3,
where M is an unknown monovalent metal.
According to the condition:
w (C) = M (C) * 100 / M (M2CO3),
11.32 = 12 * 100 / (M (M) * 2 + 12 + 16 * 3),
whence M (M) = 23 (amu),
which corresponds to the metal sodium (Na), and therefore the carbonate formula: Na2CO3.
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