Problemas
Multiple Choice 1 point Determine the Empiric Formula for a compound that is 79.46% Pand 20.54% C. PC_(4) P_(3)C_(2) P_(2)C_(3) PC Clear my selection
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Marco
veterano · Tutor durante 10 años
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Respuesta
To determine the empirical formula for a compound that is
P and
C, we need to convert these percentages into moles.1. Assume we have 100 grams of the compound. This means we have 79.46 grams of P and 20.54 grams of C.2. Calculate the moles of each element: - Moles of P:
- Moles of C:
3. Determine the simplest whole number ratio of moles: - Divide each mole value by the smallest number of moles (1.71): - P:
- C:
4. Since the ratio is not a whole number, multiply both ratios by a factor to get whole numbers. In this case, multiplying by 2 gives: - P:
- C:
Therefore, the empirical formula for the compound is
.So, the correct answer is: