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A compound contains 4.07% hydrogen,24.27% carbon and 71.65% chlorine. Itsmolar mass is 98.96 g. What are itsempirical and molecular formulas? |
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Answer» Hi there, ◇ Given ● H percentage is 4.07 ● H atomic mass is 1 ● C percentage is 24.27 ● C atomic mass is 12 ● Cl percentage is 71.65 ● Cl atomic mass is 35.5 ◇ Empirical formula calculation 1- FIND MOLES of each element by dividing percentage over atomic mass so, n(H) = 4.07÷1 = 4.07 MOL n(C) = 24.27÷ 12 = 2.02 n(Cl) = 71.65 ÷ 35.5 = 2.02 2- Find mol ratio by dividing over the lowest value H ratio 2 C ratio 1 Cl ratio 1 So, ☆ The empirical formula is 《 CH2Cl》 ◇ Molecular formula calculation Find the molar mass of empirical 12 + 2 + 35.5 = 49.5 The molar mass of moleculare is 98.96 So the coefficent 98.96 ÷ 49.5 = 2 So, the moleculare formula is 《 C2H4Cl2 》 ♡ Hope the answer is helpful ♡ Plz mark it as brainliest |
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