Na2S + 2HCl - 2NaCl + H2S
1 answer:
The states of the individual compounds is missing in the chemical equation.
The given compounds:
Na₂S + 2HCl → 2NaCl + H₂S
When metal sulfides such as the given sodium sulfide, react which acids, they form salt and hydrogen sulfide gas.
The complete chemical equation with the states of the compounds is written as;
where;
aq --- aqueous for liquid state
g --- gaseous state
Thus, we can conclude that, the states of the individual compounds is missing in the chemical equation.
Learn more about metal sulfides here: brainly.com/question/14204055
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Answer :
(A) The balanced molecular equation will be:
(B) The balanced molecular equation will be:
(C) The balanced molecular equation will be:
(D) The balanced molecular equation will be:
Explanation :
Molecular equation : It is defined as a balanced chemical equation where the ionic compounds are expressed in the form of molecules rather than component of ions.
Precipitation reaction : It is defined as the reaction in which an insoluble salt formed when two aqueous solutions are combined.
The insoluble salt that settle down in the solution is known an precipitate.
Part A : potassium carbonate and lead(II) nitrate
The balanced molecular equation will be:
In this reaction, lead carbonate is an insoluble salt and potassium nitrate is a soluble solution.
Part B : lithium sulfate and lead(II) acetate
The balanced molecular equation will be:
In this reaction, lead sulfate is an insoluble salt and lithium acetate is a soluble solution.
Part C : copper(II) nitrate and sodium sulfide
The balanced molecular equation will be:
In this reaction, Cuprous sulfide is an insoluble salt and sodium nitrate is a soluble solution.
Part D : strontium nitrate and potassium iodide
The balanced molecular equation will be:
In this reaction, strontium iodide and potassium nitrate are soluble solution.