Alka‑Seltzer is marketed as a remedy for stomach problems, such as heartburn or indigestion, and pain relief. It contains aspirin, sodium bicarbonate, and citric acid, and is effervescent when placed in water.

Enter the equation for the reaction of one sodium bicarbonate
(
NaHCO
3
)
molecule with one citric acid
(
C
6
H
8
O
7
)
molecule. Do not include phases.