Answer:
The reactants are Ca(OH)2(s) and HCl(aq)
The balanced equation is
Ca(OH)2(s) + 2HCl(aq) → CaCl2(aq) + 2H20(I)
Explanation:
Step 1: Data given
The products of the equation are: CaCl2(aq) + H20(I)
Step 2: The unbalanced equation
Ca^2+(aq) + 2Cl-(aq) + H+(aq) + OH-(aq) → CaCl2(aq) + H20(I)
Ca(OH)2(s) + HCl(aq) → CaCl2(aq) + H20(I)
Balancing the equation
Ca(OH)2(s) + HCl(aq) → CaCl2(aq) + H20(I)
On the left side we have 1x H, on the right side we have 2x H (in H2O). To balance the amount of H on both sides, we have to multiply HCl by 2.
When we multiply HCl by 2, the amount of Cl on both sides is also balanced. Now the equation is balanced.
Ca(OH)2(s) + 2HCl(aq) → CaCl2(aq) + 2H20(I)
The reactants are Ca(OH)2(s) and HCl(aq)
The balanced equation is
Ca(OH)2(s) + 2HCl(aq) → CaCl2(aq) + 2H20(I)