Q. 133.7( 6 Votes )

Which gas is evolved when hydrochloric acid is added in first test tube containing small pieces of marble and then in second test tube containing zinc granules?

Answer :

We know that when calcium carbonate (CaCO3) reacts with hydrochloric acid (HCl) then carbon dioxide, calcium chloride and water are formed. So when hydrochloric acid is added in first test tube containing small pieces of marble then CO2 gas is evolved.


CaCO3 + 2HCl CO2 + H2O + CaCl2


And when acid reacts with metal then salt and hydrogen (H2) gas are formed. So when hydrochloric acid is added in second test tube containing zinc granules then H2 gas is evolved.


Zn + 2HCl ZnCl2 + H2


Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Champ Quiz | All About Reactions of Acids and BasesChamp Quiz | All About Reactions of Acids and BasesChamp Quiz | All About Reactions of Acids and Bases38 mins
Genius Quiz | Salts Used in Daily LIfeGenius Quiz | Salts Used in Daily LIfeGenius Quiz | Salts Used in Daily LIfe40 mins
Quiz | Acid: Types and NomenclatureQuiz | Acid: Types and NomenclatureQuiz | Acid: Types and Nomenclature50 mins
Know all About Crystallization of WaterKnow all About Crystallization of WaterKnow all About Crystallization of Water26 mins
Smart Revision | Importance of pHSmart Revision | Importance of pHSmart Revision | Importance of pH52 mins
pHpHpH43 mins
Champ Quiz | All About Acids and BasesChamp Quiz | All About Acids and BasesChamp Quiz | All About Acids and Bases31 mins
Acid - Types and NomenclatureAcid - Types and NomenclatureAcid - Types and Nomenclature52 mins
Learn to Make Your Own Acid Rain and pH Paper at Home!Learn to Make Your Own Acid Rain and pH Paper at Home!Learn to Make Your Own Acid Rain and pH Paper at Home!27 mins
Smart Revision | Master Everything about Salts in One ShotSmart Revision | Master Everything about Salts in One ShotSmart Revision | Master Everything about Salts in One Shot52 mins
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses