Balancing chemical equation refers to balancing the stoichiometric coefficients ~ above the reactants and products side. This should be done together the chemical equation obeys the regulation of conservation of mass and momentum.
You are watching: Lead(ii) nitrate and potassium iodide
Reaction in between lead nitrate and also potassium iodide
The reaction between lead nitrate and potassium iodide is an example of a precipitation reaction.
Pb(NO3)2 + 2KI + PbI2 + 2KNO3
Steps to balance chemical equation
Following room the easy actions to balance the equation:
Step 1: write the Unbalanced chemistry Equation
Let us think about an unbalanced equation
Pb(NO3)2 + KI → PbI2 + KNO3
Step 2: write Down number of Atoms
Write down the variety of atoms the each element present on both reactant and product side
Atom | Reactant side | Product side |
Pb | 1 | 1 |
I | 1 | 2 |
N | 2 | 1 |
O | 6 | 3 |
Step 3: add Coefficients to Balance the mass in a chemical Equation
Note that the coefficients that are to be added must it is in a entirety number and one coefficient added applies to every the atoms current in that one certain molecule.
For example: (NO3)2 indicates 2 hydrogen atoms and 6 oxygen atoms.
First try to balance the single element o atom and then move n come hydrogen and oxygen.
So right here we will very first balance lead, nitrogen and oxygen. Walk by trial and error method.
Adding 2 iodine-on both sides provides iodine balanced. Then will relocate to nitrogen and also then oxygen. On including 2 KI and balancing with reactant side makes the equation balanced.
The very same trial and error procedure is now adhered to to balance oxygen 3 O2 then we have actually 6 oxygen atom on the reactant next and likewise 6 oxygen atom on the product side.
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Hence The balanced chemical equation is: Pb(NO3)2 + 2KI → PbI2 + 2KNO3
Answer
The reaction between lead nitrate and potassium iodide is
Pb(NO3)2 + 2KI → PbI2 + 2KNO3
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