Question

Write balanced equation for iron reacts with hydrochloric acid to form iron(II) chloride,

{FeCl}_{2}

, and hydrogen.

Accepted Answer

A balanced equation is an equation for a chemical reaction in which the number of atoms for each element in the reaction same for both the reactants and the products. This also called stoichiometric equation.
The following are the steps involving in the balancing chemical reaction,

First we have to write formulas for reactants and products

$Fe + HCl \to {FeCl}_{2} + H_{2}$

Need to count the number of atoms in each reactant and product

$Fe + HCl \to {FeCl}_{2} + H_{2}$

$1 [Fe] 1 [H] 1 [Fe] 2 [H] 1 [Cl] 2 [Cl]$

Finally, we have to balance the atoms one at a time until finishing all the atoms,

Balancing the iron

$Fe + HCl \to {FeCl}_{2} + H_{2}$

$1 [Fe] 1 [H] 1 [Fe] 2 [H] 1 [Cl] 2 [Cl]$

Balancing the chlorine

$Fe + 2 HCl \to {FeCl}_{2} + H_{2}$

$1 [Fe] 2 [H] 1 [Fe] 2 [H] 2 [Cl] 2 [Cl]$

Balancing Hydrogen

Here, there is no need to balance oxygen as it was already balanced in the above step, while balancing the chlorine.

So finally, the balanced equation for iron reacts with hydrochloric acid to form iron $(II)$ chloride, ${FeCl}_{2}$ , and hydrogen is,

$Fe + 2 HCl \to {FeCl}_{2} + H_{2}$

Lawrie Ryan and Roger Norris Solutions for Chapter: Atoms, Molecules and Stoichiometry, Exercise 16: Question

Lawrie Ryan Chemistry Solutions for Exercise - Lawrie Ryan and Roger Norris Solutions for Chapter: Atoms, Molecules and Stoichiometry, Exercise 16: Question

Questions from Lawrie Ryan and Roger Norris Solutions for Chapter: Atoms, Molecules and Stoichiometry, Exercise 16: Question with Hints & Solutions

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