Question

Which of the following reactions would result in the formation of a gaseous product?

Which of the following reactions would result in the formation of a gaseous product?
NaOH + HCl →
NH3 + HNO3 →
KHCO3 + HBr →
Ca(OH)2 + H3PO4 →

Answer 1

The reaction that would result in formation of gaseous product is

KHCO3 + HBr ( third answer)

Step-by-step explanation

KHCO3 react with HBr to form KBr , CO2 and H2O according to the below equation.

KHCO3 + HBr → KBr + CO2 + H2O

CO2 ( carbon (IV) oxide) is the gas that is formed during reaction.

other reaction does not produce a a gas for example NaOH + HCl forms NaCl and H2O

Answer 2

The third reaction will form a gaseous product, CO₂
KHCO₃ + HBr → KBr + H₂O + CO₂