Home
Class 10
CHEMISTRY
Iqbal treated a lustrous, divalent eleme...

Iqbal treated a lustrous, divalent element M with sodium hydroxide. He observed the formation of bubbles in reaction mixture. He made the same observations when this element was treated with hydrochloric acid. Suggest how can he identify the produced gas. Write chemical equations for both the reactions. 

Text Solution

AI Generated Solution

To identify the produced gas when Iqbal treated the divalent element M with sodium hydroxide and hydrochloric acid, we can follow these steps: ### Step-by-Step Solution: 1. **Identify the Element M**: - The element is described as lustrous and divalent. Lustrous indicates that it is a metal. Since it is divalent (having a valency of +2), it suggests that it can react with both acids and bases. - The element that fits these criteria is Zinc (Zn), which is a divalent metal and exhibits amphoteric behavior. ...
Doubtnut Promotions Banner Mobile Dark
|

Similar Questions

Explore conceptually related problems

What is observed when 2 mL of dilute hydrochloric acid is added to 1 g of sodium carbonate taken in a clean and dry test tube? Write chemical equation for the reaction involved.

A student adds a spoon full of powered sodium hydrogen carbonate to a flask containing ethanoic acid. List two main observations, he must note in his note book, about the reaction that takes place. Also write chemical equation for the reaction.

Sodium reacts with oxygen to produce sodium oxide, which dissolves in water to form sodium hydroxide. On adding hydrochloric acid to the base solution, salt and water are produced. Write balanced chemical equations to represent all the reactions stated in the question.

A tetravalent element forms monoxide and dioxide with oxygen. When air is passed over heated element (1273 K), producer gas is obtained. Monoxide of the element is a powerful reducing agent and reduces ferric oxide to iron Identify the element and write formulae of its monoxide and dioxide. Write chemical equations for the formation of producer gas and reduction of ferric oxide with the monoxide.

Write a balanced chemical equation with state symbols for the following reactions. (i) Solutions of barium chloride and sodium sulphate in water react to give insoluble barium sulphate and the solution of sodium chloride. (ii) Sodium hydroxide solution (in water) reacts with hydrochloric acid solution (in water) to produce sodium chloride solution and water.

A mixture of two salt was treated as follows : i. The mixture was heated with magnanese dioxide and concentrated sulphuric acid , when a yellowish -green gas was liberated. ii. The mixture on heating with sodium hydroxide solution gave a gas which turned red litmus blue iii. Its solution in water gave a blue precipitate with potassium ferricyanide and red colourtion with ammonium thiocynate iv. The mixture was boiled with potassium hydroxide and the librated gas was bubbled through an alkline solution of K_(2)HgI_(4) to give a brown precipitate identify the two salts gives ionic equation for the reaction involved in the tests (i) , (ii) and (iii).

Ethanoic acid reacts with sodium hydrogen carbonate to produce a salt 'X' and a gas 'Y'. Identify 'X' and 'Y' and write their chemical names. With the help of a labelled diagram describe an activity to confirm that the gas 'Y' is correctly identified by you. Also write the chemical equation of the reaction involved.

Solid calcium oxide was taken in a container and water was added slowly to it. (i) State two observations made in the experiment. (ii) Write the balanced chemical equation of this reaction. or Write balanced chemical equations for the following reactions : (a) dilute sulphuric acid reacs with aluminium powder. (b) dilute hydrochloric acid reacts with sodium carbonate. (c ) Carbon dioxideis passed through lime water.

Salts M, N, O, P and Q undergo reactiom (i) to (v) respectively. Identify the cation present in these salts on the basis of these reaction. Tabulate your answer in the format given below. 1. When sodium hydroxide solution is added to the salt M, and heated strongly a colourless gas with a pungent smell is evolved which turm red litmus paper blue and gives dense white fumes with a moist glass rod with hydrochloric acid. 2. Addition of dilute hydrochloric acid to a solution of N gives a thick white precipitate which is soluble in hot water. 3. When ammonium hydroxide solution is added to the solution of 0 a light blue precipitate is obtained which is soluble in excess of ammonium hydroxide to form an inteme deep blue solution. 4. When ammonium hydroxide solution is added to the solution of P reddish brown (mustard colour) precipitate is obtained which ,is insoluble even in the excess of ammonium hydroxide solution. 5. When sodium hydroxide solution is added to the solution of Q a which coloured gelatinous precipitate is obtained which is soluble in excess of sodium hydroxide to form a clear solution

A chemist opened a cupboard to find four bottles containing water solutions, each of which has lost its label. Bottles 1,2,3 contained colourless solutions, Whilst bottle 4 contained a blue solution. The labels from the bottles were lying scattered ont he floor of the cupboard. They were copper (II) sulphate sodium carbonate lead nitrate hydrochloric acid By mixing sammples of teh contents of the bottles, in pairs, the chemist made the following observations: (i) Bottle 1 + Bottle 2 white precipitate (ii) Bottle 1 + bottle 3 white precipitate (iii) Bottle 1 + Bottle 4 white precipitate (iv) Bottle 2 +Bottle 3 colourless gas evolved (v) Bottle 2+ Bottle 4 no visible reaction (vi) bottle 3 +bottle 4 blue precipitate Q. Chemical formula of white precipitate in observation (i) is:

Home
Profile