Question

Balance the equation by inserting coefficients as needed. equation: ZnS + HBr -> ZnBr_{2} + H_{2}S ZnS + HBr ⟶ ZnBr 2 + H 2 S

Answer 1

To balance the equation ZnS + HBr → ZnBr2 + H2S, one molecule of ZnS should react with two molecules of HBr to produce one molecule of ZnBr2 and one molecule of H2S, resulting in the balanced equation ZnS + 2HBr → ZnBr2 + H2S.

Step-by-step explanation:

The subject of this question is Chemistry, and it deals with balancing chemical equations, which involves finding the correct stoichiometric coefficients for each reactant and product in a chemical reaction. Let's balance the given equation: ZnS + HBr → ZnBr2 + H2S.

Steps to Balance the Equation

1. Write the unbalanced equation with the correct chemical formulas for reactants and products.
2. Determine the unbalanced elements excluding oxygen and hydrogen.
3. Balance the metals first; in this case, zinc (Zn) is already balanced.
4. Then, balance the non-metals, sulfur (S) and bromine (Br). Since there are two bromine atoms in ZnBr2, we need two molecules of HBr to provide the necessary bromine atoms. Our equation becomes ZnS + 2HBr → ZnBr2 + H2S.
5. Finally, balance hydrogen (H) and if needed, balance oxygen (O) (which is not applicable in this scenario).
6. Verify that all atoms and the overall charge are balanced (they are balanced in this equation).

The complete, balanced chemical equation is: ZnS + 2HBr → ZnBr2 + H2S.

Answer 2

Answer : The balanced chemical reaction will be,

`ZnS+2HBr\rightarrow ZnBr_2+H_2S`

Explanation :

Balanced chemical reaction : It is defined as the reaction in which the number of atoms of individual elements present on reactant side must be equal to the product side.

If the amount of atoms of each type on the left and right sides of a reaction differs then to balance the equation by adding coefficient in the front of the elements or molecule or compound in the chemical equation.

The coefficient tell us about that how many molecules or atoms present in the chemical equation.

The given chemical reaction is,

`ZnS+HBr\rightarrow ZnBr_2+H_2S`

This reaction is an unbalanced chemical reaction because in this reaction number of hydrogen bromine atoms are not balanced.

In order to balance the chemical equation, the coefficient '2' put before the
`HBr` and we get the balanced chemical equation.

The balanced chemical reaction will be,

`ZnS+2HBr\rightarrow ZnBr_2+H_2S`