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.
A gas X reacts with lime water and forms a compound Y which is used as a bleaching agent in the chemical industry. Then,
X is Chlorine
Y is Calcium oxychloride (CaOCl2) also known as bleaching powder.
The equation for the above reaction is given as:
$Ca( OH)_{2} \ +Cl_{2} \ \rightarrow \ CaOCl_{2} \ +\ H_{2} O$
Limewater [Ca(OH)2] + X (Cl2) → Bleaching powder (CaOCl2) + Water
Related Articles
- 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.
- 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 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.
- A compound 'X' on heating with excess conc. sulphuric acid at 443 K gives an unsaturated compound 'Y'. 'X ' also reacts with sodium metal to evolve a colorless gas 'Z'. Identify 'X ', 'Y' and 'Z'. Write the equation of the chemical reaction of formation of 'Y', and also write the role of sulphuric acid in the reaction.
- Of the three metals X, Y and Z. X reacts with cold water, Y with hot water and Z with steam only. Identify X, Y and Z and also arrange them in order of increasing reactivity.
- (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.
- Identify ‘x’, ‘y’ and ‘z’ in the following reaction : $2KClO_3 (x) \xrightarrow{(y)} 2 KCl (x) + O_2(z)$(a) x = gas ; y = reaction condition, z = gas (b) x = solid ; y = liquid; z = gas (c) x = number of moles of KClO3 ; y = reaction condition; z = no. of molecules of oxygen. (d) x = physical state of KClO3 and KCl; y = reaction condition; z = physical state of O2.
- 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 gas is evolved when ethanol reacts with sodium. Name the gas evolved and also write the balanced chemical equation of the reaction involved.
- 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?
- A compound ‘A’ is used in the manufacture of cement. When dissolved in water, it evolves a large amount of heat and forms compound ‘B’.(i) Identify A and B.(ii) Write chemical equation for the reaction of A with water.(iii) List two types of reaction in which this reaction may be classified.
- 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)What happens when calcium reacts with water? Write the chemical equations of the reaction of calcium with water.(b)Write the chemical equation of the reaction which takes place when iron reacts with dilute sulphuric acid. What happens when the gas produced is ignited with a burning matchstick?
Kickstart Your Career
Get certified by completing the course
Get Started