- Trending Categories
- Data Structure
- Operating System
- MS Excel
- C Programming
- Social Studies
- Fashion Studies
- Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
In one of the industrial processes used for the manufacture of sodium hydroxide, a gas X is formed as a by-product. The gas X reacts with lime water to give a compound Y which is used as a bleaching agent in the chemical industry. Identify X and Y, giving the chemical equation of the reactions involved.
Sodium chloride is used for the manufacture of sodium hydroxide by the process of chloralkali. In this process, chlorine and hydrogen gas are formed as byproducts along with sodium hydroxide. Chlorine gas gives bleaching power when reacts with lime water. Hence,
Gas X is chlorine.
Compound Y is calcium oxychloride. It is commonly known as bleaching powder and used as a bleaching agent in chemical industries.
The chemical equation is given below:
$2NaCl(aq) + 2H_2O(l) → 2NaOH(aq) +Cl_2(g) + H_2(g)$
$X→Cl_2 (Chlorine \ gas)$
$Ca(OH)_2 + Cl_2 ⟶ CaOCl_2 +H_2O$
- Related Articles
- A gas X reacts with lime water and forms a compound Y which is used as bleaching agent in the chemical industry. Identify X and Y. Give the chemical equation of the reaction.
- How is sodium hydroxide manufactured in industries? Name the process. In this process, a gas X is formed as a byproduct. This gas reacts with lime water to give a compound Y, which is used as a bleaching agent in the chemical industry. Identify X and Y and write the chemical equation of the reaction involved.
- A substance X which is used as an antacid reacts with dilute hydrochloric acid to produce a gas Y which is used in one type of fire-extinguisher. Name the substance X and gas Y. Write a balanced equation for the chemical reaction which takes place.
- Hydrochloric acid reacts with a metal X to form a gas Y which burns with a ‘pop’ sound. Sodium hydroxide solution also reacts with the same metal X (on heating) to form the same gas Y.(a) Name X and Y(b) Write the chemical equation of the reaction of metal X with (i) Hydrochloric acid, and (ii) Sodium hydroxide solution.
- (a) When ethanoic acid reacts with sodium hydrogen carbonate, then a salt X is formed and a gas Y is evolved. Name the salt X and gas Y. Describe an activity with the help of a labelled diagram of the apparatus used to prove that the evolved gas is the one which you have named. Also, write the chemical equation of the reaction involved.(b) Give any two uses of ethanoic acid.
- When a piece of limestone reacts with dilute HCl, a gas X is produced. When gas X is passed through water, then a white precipitate Y is formed. On passing excess of gas X, the white precipitate dissolves forming a soluble compound Z.(a) What are X, Y and Z?(b) Write equations for the reactions which takes place:(i) when limestone reacts with dilute HCl(ii) when gas X reacts with limewater to form white precipitate Y.(iii) when excess gas X dissolves white precipitate Y to form a soluble compound Z.
- A salt X is formed and a gas is evolved when ethanoic acid reacts with sodium hydrogen carbonate. Name the salt X and the gas evolved. Describe an activity and draw the diagram of the apparatus to prove that the evolved gas is the one which you have named. Also, write a chemical equation of the reaction involved.
- The metal X reacts with dilute hydrochloric acid to form a gas Y. The metal X also reacts with sodium hydroxide solution (on heating) to form the same gas Y. When a lighted matchstick is applied, this gas burns by producing a ‘pop’ sound.(a) Name two metals which could behave like X(b) Name the gas Y
- A gas is evolved when ethanol reacts with sodium. Name the gas evolved and also write the balanced chemical equation of the reaction involved.
- When water is added gradually to a white solid X, a hissing sound is heard and a lot of heat is produced forming a product Y. A suspension of Y in water is applied to the walls of a house during white washing. A clear solution of Y is also used for testing carbon dioxide gas in the laboratory.(a) What could be solid X? Write its chemical formula.(b) What could be product Y? Write its chemical formula.(c) What is the common name of the solution of Y which is used for testing carbon dioxide?(d) Write chemical equation of the reaction which takes place on adding water to solid X?(e) Which characteristic of chemical reactions is illustrated by this example?
- A non-metal X which is the largest constituent of air combines with hydrogen when heated in the presence of iron as catalyst to form a gas Y. When gas Y is treated with sulphuric acid, it forms a compound Z which is used as a chemical fertilizer.(a) What are X, Y, and Z? (b) To which group of periodic table does X belong? (c) Name the period of periodic table in which X is placed. (d) Which element is placed just before X in the period? (e) Which element is placed just after X in the period?
- A chemical compound ‘X’ is used in the soap and glass industry. It is prepared from brine. (a) Write the chemical name, common name and chemical formula of ‘X’. (b) Write the equation involved in its preparation. (c) What happens when it is treated with water containing Ca or Mg salts?
- During electrolysis of brine, a gas ‘G’ is liberated at anode. When this gas ‘G’ is passed through slaked lime, a compound ‘C’ is formed, which is used for disinfecting drinking water.(i) Write formula of ‘G’ and ‘C’.(ii) State the chemical equation involved.(iii) What is common name of compound ‘C’? Give its chemical name.
- A magnesium ribbon is burnt in oxygen to give a white compound X accompanied by emission of light. If the burning ribbon is now placed in an atmosphere of nitrogen, it continues to burn and forms a compound Y.(a) Write the chemical formulae of X and Y.(b) Write a balanced chemical equation, when X is dissolved in water.
- On heating blue coloured powder of copper (II) nitrate in a boiling tube, black copper oxide, O2 and a brown gas X is formed.(a) Identify the type of reaction and gas X.(b) Write the balanced chemical equation of the reaction.(c) Write the pH range of the aqueous solution of the gas X.