Question

When the following equation is balanced, the coefficient of H3PO4 is ________. H3PO4 (aq) + NaOH (aq) → Na3PO4 (aq) + H2O (l)

Answer 1

Answer:

The coefficient of H3PO4 is 1

Explanation:

The equation is H3PO4(aq) + NaOH (aq) → Na3PO4(aq) + H2O (l)

To balance the reaction, we first balance the Na atoms: On the right there are 3 Na atoms, so on the left we multiply NaOH by 3

The number of P atoms on the left is 1, the number of the P atoms on the right is also 1. So, this is already balanced.

On the left there are 6 H atoms, on the right we have 2H atoms, so e have to multiply H2O by 3.

On the left we have 7 O atoms, on the right, now we have also  7O atoms.

So this is already balanced.

The fully balanced reaction is H3PO4 (aq) + 3NaOH(aq) → Na3PO4(aq) + 3H2O(l)

The coefficient of H3PO4 is 1