Concept explainers
Aqueous solutions of iron(II) chloride and sodium sulfide react to form iron(II)sulfide and sodium chloride.
(a) Write the balanced equation for the reaction.
(b) If you combine 40. g each of Na2S and FeCl2, what is the limiting reactant?
(c) What mass of FeS is produced?
(d) What mass of Na2S or FeCl2 remains after the reaction?
(e) What mass of FeCl2 is required to react completely with 40. g of Na2S?
(a)
Interpretation:
Balanced equation for the given reaction has to be written.
Concept introduction:
- For chemical reaction balanced chemical reaction equation written in accordance with the Law of conservation of mass.
- Law of conservation of mass states that for a reaction total mass of the reactant and product must be equal.
Answer to Problem 92GQ
The balanced equation for the reaction of aqueous solutions of iron(II) chloride and sodium sulfate forming iron(II) sulfide is written as,
Explanation of Solution
Aqueous solution of iron (II) chloride and sodium sulfide reacts to form iron (II) sulfide and sodium chloride.
For chemical reaction balanced chemical reaction equation written in accordance with the Law of conservation of mass.
Balanced equation for this reaction is,
(b)
Interpretation:
Limiting reagent of the reaction of
Concept introduction:
Limiting reagent: limiting reagent is a reactant, which consumes completely in the chemical reaction. The quantity of the product depends on this limiting reagent, it can be determined with the help of balanced chemical equation for the reaction.
Answer to Problem 92GQ
Explanation of Solution
Balanced chemical equation for the given reaction is,
To find the mass of product formed in the reaction, the amount of each reactant involved in the given reaction should be determined.
Therefore,
The mass of
The amount of
Therefore
(c)
Interpretation:
Mass of Iron produced in the reaction of
Answer to Problem 92GQ
The mass of
Explanation of Solution
As calculated in previous step, the maximum mass of
(d)
Interpretation:
The mass of
Answer to Problem 92GQ
The mass of
Explanation of Solution
The mass of
The mass of
Reaction began with
(e)
Interpretation:
The mass of
Concept Introduction:
Stoichiometric factor is a relationship between reactant and product which is obtained from the balanced chemical equation for a particular reaction.
Explanation of Solution
Balanced chemical equation for the given reaction is,
From the balanced equation it is clear that the reactants
The mass of
Mass of
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Chapter 4 Solutions
Chemistry & Chemical Reactivity
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