Question

VueSUVIS An unknown compound contains only C, H, and O. Combustion of 6.60 g of this compound produced 15.0 g CO, and 6.14 g H,O. What is the empirical formula of the unknown compound? Insert subscripts as needed. empirical formula: C,H,0

Answer 1

Dear student,

Auswer: & H₂O Caty oz & O2 con moles of coz - ginen mass ing motar mass in glonel - 15 mol 44 = 0.34 mot Ionole of con contains I mole ofc and a moles of o 0.34 mole of coz contain 0.34 nolege and 0.68 notes ao mass of c = 0.34 x 12 g = 4.08g moles of H₂O = sily not = 0.34 mol I onole of H20 contains a moles of H and Imole of o 0.34 mole of H20 contains 0.68 moles of H and 0.34 mole go mass g h = 0.68x1 g. -0.689

Mass q o - to tad mass of ginen compound - (mass get mass of H) = 6.6-( 4.08 + 0.68) 6.6 - 4.76 = 1.849. 1.89 moles of O2 = 18 Now, we have molar ration of each element C:H:O 0.34:0.68:0.115 3:6! is Hence emperical formula C3 Heo

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