contestada

What coefficient is needed to balance the reaction
CaCl2 + H₂CO3 → CaCO3 + HCI?
OA. 2CaCO3
OB. 2H₂CO3
OC. 2CaCl₂
OD. 2HCI

Respuesta :

Answer:

OD. 2HCl

Explanation:

A balanced equation needs the equal # of each element on BOTH sides.

By putting a 2 in front of HCl you now have 2 hydrogens on both sides and 2 chlorines. The Ca and CO3 are already balanced.