Step 4: Substitute Coefficients and Verify Result. Count the number of atoms of each element on each side of the equation and verify that all elements and electrons (if there are charges/ions) are balanced. Since there is an equal number of each element in the reactants and products of Na2SO4 + BaCl2 = BaSO4 + 2NaCl, the equation is balanced Since there is an equal number of each element in the reactants and products of Na2HPO4 + 3AgNO3 = Ag3PO4 + HNO3 + 2NaNO3, the equation is balanced. Na is not balanced. Add 1 molecule of NaNO 3 to the product (right-hand) side to balance Sodium: Na 2 HPO 4 + AgNO 3 = Ag 3 PO 4 + HNO 3 + 2 NaNO 3. Step 4: Substitute Coefficients and Verify Result. Count the number of atoms of each element on each side of the equation and verify that all elements and electrons (if there are charges/ions) are balanced. Since there is an equal number of each element in the reactants and products of 2HNO3 + NaO = Na (NO3)2 + H2O, the equation is balanced Word Equation. Sodium Sulfate + Lead(Ii) Nitrate = Sodium Nitrate + Lead Sulfate. Na2SO4 + Pb(NO3)2 = NaNO3 + PbSO4 is a Double Displacement (Metathesis) reaction where one mole of aqueous Sodium Sulfate [Na 2 SO 4] and one mole of aqueous Lead(Ii) Nitrate [Pb(NO 3) 2] react to form two moles of aqueous Sodium Nitrate [NaNO 3] and one mole of solid Lead Sulfate [PbSO 4] Step 4: Substitute Coefficients and Verify Result. Count the number of atoms of each element on each side of the equation and verify that all elements and electrons (if there are charges/ions) are balanced. ZnSO3 + 2 HNO3 = Zn (NO3)2 + SO2 + H2O. Reactants. To balance the equation H2SO4 + NaNO3 = HNO3 + Na2SO4 using the algebraic method step-by-step, you must have experience solving systems of linear equations. Create an equation for each element (H, S, O, Na, N) where each term represents the number of atoms of the element in each reactant or product. H: 2 a + 0b = 1 c + 0d S: Multiplying the number of moles of H A 2 SO A 4 by this factor gives us the number of moles of NaOH needed: 3.16 × 10 − 2 mol H 2 SO 4 × 2 mol NaOH 1 mol H 2 SO 4 = 6.32 × 10 − 2 mol NaOH. Notice how we wrote the mole ratio so that the moles of H A 2 SO A 4 cancel out, resulting in moles of NaOH as the final units. Step 4: Substitute Coefficients and Verify Result. Count the number of atoms of each element on each side of the equation and verify that all elements and electrons (if there are charges/ions) are balanced. Since there is an equal number of each element in the reactants and products of N2O5 + H2O = 2HNO3, the equation is balanced. Balance the 4dpHyfi.