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Empirical Formula II I can collect experimental data to calculate the empirical formula of a

Empirical Formula II I can collect experimental data to calculate the empirical formula of a compound. syringe to add acid to magnesium`. copper oxide. microburner. magnesium & hydrochloric acid. water. Reduction of Copper Oxide Before heating:-

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Empirical Formula II I can collect experimental data to calculate the empirical formula of a

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  1. Empirical Formula II I can collect experimental data to calculate the empirical formula of a compound

  2. syringe to add acid to magnesium` copper oxide microburner magnesium & hydrochloric acid water

  3. Reduction of Copper Oxide Before heating:- 2. Mass of glass tube + CuO + mineral wool plugs = 1. Mass of empty glass tube + mineral wool plugs = Mass of CuO used = After heating:- 3. Mass of glass tube + Cu + mineral wool plugs = 1. Mass of empty glass tube + mineral wool plugs = Mass of Cu made = Mass of O = mass of CuO – mass of Cu Calculate the empirical formula of copper oxide.

  4. syringe to push hydrogen over hot copper oxide copper oxide microburner magnesium & hydrochloric acid water

  5. Calculating Empirical Formulae from % decomposition by mass. % composition by mass means that you are starting with 100g of the compound, so work in exactly the same way as before. Question:Sulphuric acid contains 2.04% of H, 32.65% of S and 65.31% of O by mass. Calculate the empirical formula of sulphuric acid.

  6. H S O Step 1: mass of 2.04g 32.65g 65.31g each element in 100g of the acid Step 2: Ar of each H=1 S=32 O=16 element Step 3: convert to 2.0432.6565.31 moles of each 1 32 16 element =2.04 mol =1.02 mol =4.08 mol Step 4: element present in the smallest amount is sulphur (1.02 mol) Step 5: divide 2.041.024.08 by the smallest 1.02 1.02 1.02 amount = 2 = 1 = 4

  7. The empirical formula is:- H2SO4

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