write a balanced chem equation for solid lead (II) sulfide reacts with aq hydrochloric acid to form solid lead (II) chloride and dihydrogen sulfide gas.
To write a balanced chemical equation for the reaction between solid lead (II) sulfide (PbS) and aqueous hydrochloric acid (HCl) to form solid lead (II) chloride (PbCl2) and dihydrogen sulfide gas (H2S), follow these steps:
Step 1: Write the reactants on the left side of the equation and the products on the right side.
PbS + HCl → PbCl2 + H2S
Step 2: Write the chemical formulas of the reactants and products. The formulas for the given compounds are:
Lead (II) sulfide: PbS
Hydrochloric acid: HCl
Lead (II) chloride: PbCl2
Dihydrogen sulfide gas: H2S
Step 3: Balance the equation by adjusting the coefficients in front of each compound so that the number of atoms for each element is equal on both sides of the equation.
The balanced equation for the reaction is:
PbS + 2HCl → PbCl2 + H2S
To write a balanced chemical equation, follow these steps:
Step 1: Write the chemical formula for the reactants and products.
Solid Lead (II) sulfide: PbS
Aqueous hydrochloric acid: HCl(aq)
Solid Lead (II) chloride: PbCl2
Dihydrogen sulfide gas: H2S
Step 2: Write the unbalanced equation using the chemical formulas.
PbS(s) + HCl(aq) → PbCl2(s) + H2S(g)
Step 3: Balance the equation by adding coefficients to the reactants and products.
PbS(s) + 2HCl(aq) → PbCl2(s) + H2S(g)
Now the equation is balanced. The coefficients ensure that the same number of atoms of each element are present on both sides of the equation.
Please note that when balancing equations, it is important to preserve the law of conservation of mass, which states that atoms are neither created nor destroyed in a chemical reaction.
PbS(s) + HCl(aq) ==> PbCl2(s) + H2S(g)
You balance it.