Asked Oct 25, 2019

Expert Answer

Step 1

Limiting reagent is defined as a reactant which is present in a limited quantity in the chemical reaction. The reaction ceases after the consumption of the limiting reagent.

The theoretical yield of the product formed in the reaction is calculated by considering the number of moles of the limiting reagent.

The number of moles of a species is calculated by expression (1), in which, n is the number of moles, m is the mass, and M is the molar mass of the species.


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(1) М

Step 2

The given reaction is represented by equation (2).

The number of moles of bismuth nitrate and hydrosulfuric acid in the reaction are calculated in equations (3) and (4) respectively.


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(2) (aq+3H2S (g) ->Bi,S, (s)+6HNO3(aq) 2Bi (NO, 50.0 g Bi(NO3) (3) 395.0 g/mol -0.126 mol 6.0 g 34.1 g/mol (4) =0.176 mol

Step 3

In the reaction (2), 2 moles of bismuth nitrate reacts with 3 moles of hydrosulfuric acid.

This means 0.126 moles of bismuth nitrate reacts with 3/2 (0.126 mol) = 0.189 mol of hydrosulfuric acid. But the number of mol...

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