Question

Determine the correct empirical formula of a compound containing 26.68% carbon, 2.24% hydrogen and 71.08% oxygen Select one: O a.CH, O b.C,H,0 o C. CHO, od. CH,02 о е. сно How many grams of Br, is required to produce 340 moles of KBr given the following equation: 2K + Br2 2KB Select one O a. 2170 O b. 543 O c. 1090 O d. 272

Answer 1

Empirical formula is the simplest ratio of no.of atoms of different elements in compund.

> Empirical Formula » It is the simplest ratio af atoms of different Elements in a compound. S.N. Element Atomic mass | % 1% Divided by value Small Tamo AM |26.68 -2.22 | 2,2 = 1 12.011 12.00 H 126.68 2.22 <= 2.22 2.24 117.008 9.22 - H 11.00842.24 - 71.00 = 115.9941700 15.99 4.44 =2 L 71.08 15.99 15.99 - Gruu Empirical formula = C, H, O2 = CHO Answer =) (C) CHOZ