The balance equation for (NH₄)₃PO₄ + Pb(NO₃)₄ = Pb₃(PO₄)₄ + NH₄NO₃ is:
4 (NH₄)₃PO₄ + 3 Pb(NO₃)₄ = Pb₃(PO₄)₄ + 12 NH₄NO₃
Reaction Type: Double Replacement
You can try to balance a chemical equation using this online tool from webqc.org.
It takes practice to be able to write balanced equations. There are essentially 3 steps to the process:
Step 1: Write the unbalanced equation
Chemical formulas of reactants are listed on the left hand side of the equation.
Products are listed on the right hand side of the equation.
Reactants and products are separated by placing an arrow between them to show the direction of the reaction. Reactions at equilibrium will have arrows facing both directions.
Step 2: Balance the equation
Apply the “Law of Conservation of Mass” to get similar number of atoms of every element on each side of the equation. Tip: Begin by balancing an element that appears in only one reactant and product.
Once one element is balanced, proceed to balance another, and another, till all elements are balanced.
Balance chemical formulas by putting coefficients in front of them. Don’t add subscripts, because this will change the formulas.
Step 3: Indicate the states of matter of the reactants and products
Use (g) for gaseous substances.
Use (s) for solids.
Use (l) for liquids.
Use (aq) for species in solution in water.
Write the state of matter instantly following the formula of the substance it describes.
Balancing a chemical equation is an important exercise in any chemistry lesson, but many students find it a very tricky task. Here are a few tips for Balancing Chemical Equations at Bighthubeducation.com.