Common Gases

Question 1

H₂S

Answer 1

Any sulfide (salt of S^2-) plus any acid form H₂S (g) and a salt

Question 2

CO₂

Answer 2

Any carbonate (salt of CO₃^2-) plus any acid form CO2 (g), HOH, and a salt

Question 3

SO2

Answer 3

Any sulfite (salt of SO₃^2-) plus any acid form SO₂ (g), HOH, and a salt

Question 4

NH₃

Answer 4

Any ammonium salt (salt of NH₄+) plus any soluble strong hydroxide react upon heating to form NH₃ (g), HOH, and a salt