Question

The identity of an insoluble precipitate

!) The following reactions, are pertinent to this experiment, (a) shown is unbalanced equations. Balance this equations:

(a) Ba(NO3)2 + ____ NH2SO3H +_____ H2O ----> _____Ba(NH2SO3)2 + 2 HNO3

(b)   Ba(NO3)2 + NH2SO3H + H2O ----> BaSO4 + NH4NO3 + HNO3

(c)   Ba(NO3)2 + 2 NH2SO3H + 2 H2O ----> Ba(NH2)2 + 2 H2SO4 + 2 HNO3

2) When a solution containing 1.4 g of Ba(NO3)2 and 2.4 g of NH2SO3H is boiled, a precipitate forms. This precipitate may be Ba(NH2SO3)2, BaSO4, or Ba(NH2)2. You can find these products in the reactions whose equations you balanced in question 1 above.

(a) calculate the number of moles of each reactant.

(b) Determine the limiting reactant in each of the following three reactions:

(i) Reactions producing Ba(NH2SO3)2

(ii) Reactions producing BaSO4

(iii) Reactions producing Ba (NH2)2

(c) What conclusion can you reach about the limiting reactant in this experiment?

(3) Calculate the expected masses of the three possible products. Use the mass of the limiting reactant and the equations that you balanced in the questions above:

Ba(NH2SO3)2

BaSO4

Ba(NH2)2

Answer 1