a combustion reaction a combustion reaction
You will get a positive result for hydrogen because the reaction of zinc and hydrochloric acid produces zinc chloride and hydrogen. The chlorine atoms from the hydrochloric acid attach to the zinc, leaving the hydrogen behind and thus, you have hydrogen.
Hydrochloric acid reacts with copper carbonate to produce copper chloride, carbon dioxide, and water. This reaction is a double displacement reaction where the hydrogen in the acid displaces the copper in the carbonate compound.
This is hydrogen.
Hydrochloric acid and zinc react to form zinc chloride and hydrogen gas. This is a single displacement reaction where the more reactive zinc displaces hydrogen from hydrochloric acid.
When calcium reacts with hydrochloric acid, it forms calcium chloride and hydrogen gas. This is a single displacement reaction where calcium replaces hydrogen in hydrochloric acid to produce calcium chloride.
When hydrochloric acid is added to magnesium metal, magnesium chloride and hydrogen gas are produced. This is a displacement reaction where the magnesium metal displaces the hydrogen in hydrochloric acid to form magnesium chloride.
Hydrogen Chloride gas --> HCl or Hydrochloric Acid --> HCl(aq)
When calcium reacts with hydrochloric acid, it forms calcium chloride and hydrogen gas as products. This is a single displacement reaction where calcium displaces hydrogen in hydrochloric acid to form calcium chloride.
Hydrochloric acid and iron react to form iron chloride and hydrogen gas. This is a single displacement reaction where the iron displaces the hydrogen ion in hydrochloric acid.
When sodium carbonate reacts with hydrochloric acid, it forms sodium chloride, carbon dioxide, and water. This is a double displacement reaction where the ions from the two compounds switch places to form the new products.
Magnesium Carbonate + Hydrochloric Acid ------> Magnesium Chloride + Water + Carbon Dioxide The previous answer said magnesium hydroxide + carbon dioxide, but then you will have canceled out the chlorine, which due to the law of conservation of mass, is impossible.
CaCO3 + 2(HCl) = H2O + CO2 + CaCl2 so Calcium carbonate + hydrogen chloride yields water and carbon dioxide and Calcium chloride