Question

To verify the law of conservation of mass in a chemical reaction a student takes a known amount of solution of baCl2 in a small test tube which is hanged in a sealed conical flask, containing Na2So4 solution. the flask is slightly tilted so that the two solutions get mixed with each other and a chemical reaction occurs. what is the relation between the masses of the chemicals involved?

Answer 1

(a) Mass of BaCl2 =Mass of Na2SO4

(b) Mass of (BaCl2+Na2SO4)=Mass of (BaSO4+NaCl)

(c) Mass of (BaCl2+NaCl) =Mass of (BaSO4+Na2SO4

(d) Mass of Na2SO4 = Mass of BaSO4