We did a gravimetric analysis of an unknown sulfate sample (dissolve in water with HCl) and reacted it with BaCl2. The precipitate was BaSO4. The mass of the unknown sample was 0.4145 grams while the mass of the precipitate after the experiment was 0.4146 grams. Upon doing stoichiometry on this result, I found out that the %SO4 in the unknown sample is equal to the %SO4 in the precipitate. My questions are: Is it theoretically possible that the mass of the unknown sulfate sample is equal to the mass of the BaSO4? Because upon hypothetically using Na2SO4 as the unknown sulfate sample, the stoichiometry tells me that the precipitate should weigh more than the reactant (meaning that the ppt should weigh more than 0.4145g which is ~0.5569g). Is it right to say when the %SO4 in the precipitate is equal to the %SO4 in the unknown sample, then they are both the same compound? Is it right to say that the unknown sulfate sample (reactant) in this experiment was also BaSO4? Is it right to conclude that the chemical reaction involved in the experiment was: BaSO4 + BaCl2 => BaSO4 + BaCl2
We did a gravimetric analysis of an unknown sulfate sample (dissolve in water with HCl) and reacted it with BaCl2. The precipitate was BaSO4. The mass of the unknown sample was 0.4145 grams while the mass of the precipitate after the experiment was 0.4146 grams. Upon doing stoichiometry on this result, I found out that the %SO4 in the unknown sample is equal to the %SO4 in the precipitate. My questions are: Is it theoretically possible that the mass of the unknown sulfate sample is equal to the mass of the BaSO4? Because upon hypothetically using Na2SO4 as the unknown sulfate sample, the stoichiometry tells me that the precipitate should weigh more than the reactant (meaning that the ppt should weigh more than 0.4145g which is ~0.5569g). Is it right to say when the %SO4 in the precipitate is equal to the %SO4 in the unknown sample, then they are both the same compound? Is it right to say that the unknown sulfate sample (reactant) in this experiment was also BaSO4? Is it right to conclude that the chemical reaction involved in the experiment was: BaSO4 + BaCl2 => BaSO4 + BaCl2
We did a gravimetric analysis of an unknown sulfate sample (dissolve in water with HCl) and reacted it with BaCl2. The precipitate was BaSO4. The mass of the unknown sample was 0.4145 grams while the mass of the precipitate after the experiment was 0.4146 grams. Upon doing stoichiometry on this result, I found out that the %SO4 in the unknown sample is equal to the %SO4 in the precipitate. My questions are: Is it theoretically possible that the mass of the unknown sulfate sample is equal to the mass of the BaSO4? Because upon hypothetically using Na2SO4 as the unknown sulfate sample, the stoichiometry tells me that the precipitate should weigh more than the reactant (meaning that the ppt should weigh more than 0.4145g which is ~0.5569g). Is it right to say when the %SO4 in the precipitate is equal to the %SO4 in the unknown sample, then they are both the same compound? Is it right to say that the unknown sulfate sample (reactant) in this experiment was also BaSO4? Is it right to conclude that the chemical reaction involved in the experiment was: BaSO4 + BaCl2 => BaSO4 + BaCl2
We did a gravimetric analysis of an unknown sulfate sample (dissolve in water with HCl) and reacted it with BaCl2. The precipitate was BaSO4. The mass of the unknown sample was 0.4145 grams while the mass of the precipitate after the experiment was 0.4146 grams. Upon doing stoichiometry on this result, I found out that the %SO4 in the unknown sample is equal to the %SO4 in the precipitate.
My questions are:
Is it theoretically possible that the mass of the unknown sulfate sample is equal to the mass of the BaSO4? Because upon hypothetically using Na2SO4 as the unknown sulfate sample, the stoichiometry tells me that the precipitate should weigh more than the reactant (meaning that the ppt should weigh more than 0.4145g which is ~0.5569g).
Is it right to say when the %SO4 in the precipitate is equal to the %SO4 in the unknown sample, then they are both the same compound? Is it right to say that the unknown sulfate sample (reactant) in this experiment was also BaSO4?
Is it right to conclude that the chemical reaction involved in the experiment was: BaSO4 + BaCl2 => BaSO4 + BaCl2
Definition Definition Transformation of a chemical species into another chemical species. A chemical reaction consists of breaking existing bonds and forming new ones by changing the position of electrons. These reactions are best explained using a chemical equation.
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