Gas Formation Equations

Question 1

H2S

Answer 1

Any sulfide (salt+sulfur) + any acid –> H2S(g) + salt

Question 2

CO2

Answer 2

salt of carbonate (CO3 2-) + acid –> CO2 (g) + H2O + salt

Question 3

SO2

Answer 3

any salt of sulfite (SO3 2-) + acid –> SO2(g) + H2O + salt

Question 4

NH3

Answer 4

salt of ammonium (NH4+) + any soluble, strong hydroxide –> NH3 (g) + H2O + salt