Just count how many of each atom there are on each side of the equation.
It needs to be the same, for each of the five atoms.
Which of the following is a correctly balanced reaction equation?
CaCl2 + NaOH --> NaCl2 + Ca(OH)
CaCl2 + 2NaOH --> 2NaCl +Ca(OH)
CaCl2 + NaOH --> NaCl + Ca(OH)2
2CaCl2 + 4NaOH --> 4NaCl + 2 Ca(OH)2
1 answer