Q. 195.0( 5 Votes )

A compound ‘X’ is bitter to taste. It is compound of washing powder and reacts with dilute HCl to produce brisk effervescence due to a colourless and odourless gas ‘Y’ which turns lime water milky due to the formation of ‘Z’ when an excess of CO2 is passed, milkiness disappears due to the formation of ‘P’. Identify ‘X’. ‘Y’, ‘Z’ and ‘P’. Write the equations involved in the formation of Y, Z, and P.

Answer :

Since the compound X is a washing powder then it has to be sodium carbonate whose common name is washing powder. When sodium carbonate reacts with dilute HCl, carbon dioxide gas is liberated.

This gas reacts with lime water to form calcium carbonate which gives the temporary milky appearance.


On further passing the gas, the calcium carbonate reacts to calcium bicarbonate and the milky appearance disappears.


X is Sodium Carbonate [Na2CO3]


Y is Carbon Dioxide [CO2]


Z is Calcium Carbonate [CaCO3]


P is Calcium Bicarbonate [Ca (HCO3)2]


The reactions is as follows:


Na2CO3 + 2HCl 2NaCl + H2O + CO2


Ca (OH) 2 + CO2 CaCO3 + H2O


CaCO3 + CO2 + H2O Ca (HCO3)2


Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
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
Out-of-the-box Knowledge of Acids and BasesOut-of-the-box Knowledge of Acids and BasesOut-of-the-box Knowledge of Acids and Bases27 mins
Types of SaltsTypes of SaltsTypes of Salts36 mins
Genius Quiz | Know all About Experiments in ChemistryGenius Quiz | Know all About Experiments in ChemistryGenius Quiz | Know all About Experiments in Chemistry36 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
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
Salts and Chemistry behind the SaltsSalts and Chemistry behind the SaltsSalts and Chemistry behind the Salts53 mins
Champ Quiz | Strength of Acids and BasesChamp Quiz | Strength of Acids and BasesChamp Quiz | Strength of Acids and Bases31 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