PLEASE HELP WILL GIVE BRAINLIEST

Which coefficients balance the following equation?

___FeCl3 + ___NaOH arrow ___Fe(OH)3 + ___NaCl

A. 1, 3, 1, 3
B. 3, 1, 3, 1
C. 2, 2, 2, 2
D. 1, 2, 1, 2

A. 1,3,1,3

Explanation:

The coefficients 1,3,1,3 balance the equation.

1 FeCl3 + 3 NaOH –> 1 Fe(OH)3 + 3 NaCl

In this equation we know it is balanced.

Write down the type of element on both left hand and right hand sides.

Fe Fe

Cl Cl

Na Na

O O

H H

Write down the valency/amount of each atom

Fe= 1 Fe= 1

Cl= 3 Cl= 3

Na= 3 Na= 3

O= 3 O= 3

H= 3 H=3

Both sides, left and right have the same number of atoms. Therefore both sides are balanced.