Question

select the correct number. the equation shows neutralization of an acid and a base to produce a salt and water. 2hcl + na₂o → xnacl + h₂o which value of x will balance the equation?

Explanation:

Step1: Count sodium atoms on left - hand side

On the left - hand side of the equation $2HCl+Na_2O
ightarrow xNaCl + H_2O$, the number of sodium ($Na$) atoms in $Na_2O$ is 2.

Step2: Equate sodium atoms on both sides

For the equation to be balanced, the number of sodium atoms on the right - hand side (in $xNaCl$) must be equal to the number on the left - hand side. Since each $NaCl$ has 1 sodium atom, and there are 2 sodium atoms on the left, $x$ must be 2 so that the number of sodium atoms is the same on both sides.

Answer:

2