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प्रश्न
Explain the following:
Bubbles are produced when acetic acid is added to a solution of sodium hydrogencarbonate.
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उत्तर
When acetic acid is added to a solution of sodium hydrogencarbonate, carbon dioxide gas is formed which comes out in the form of bubbles.
Sodium hydrogencarbonate + Acetic acid → Sodium carbonate + Water + Carbon dioxide
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संबंधित प्रश्न
Which metals do not corrode easily?
Explain why rusting of iron objects is faster in coastal areas than in deserts.
Name the metal which is used for galvanising iron.
No chemical reaction takes place when granules of a rusty-brown solid A are mixed with the powder of another solid B. However, when the mixture is heated, a reaction takes place between its components. One of the products C is a metal and settles down in the molten state while the other product D floats over it. It was observed that the reaction is highly exothermic.
(a) What could the solids A and B be?
(b) What are the products C and D most likely to be?
(c) Write the chemical equation for the reaction between A and B leading to the formation of C and D. Mention the physical states of all the reactants and products in this equation and indicate the heat change which takes place.
(d) What is the special name of such a reaction? State one use of such a reaction.
(e) Name any two types of chemical reactions under which the above reaction can be classified.
Choose the correct alternative and rewrite the following:
Iron is _____________________.
_______ forms a green colour in the water.
Find the odd one out and give its explanation.
Write scientific reason.
Coins are made from metals and alloys.
Generally, when metals are treated with mineral acids, hydrogen gas is liberated but when metals (except Mn and Mg), treated with HNO3, hydrogen is not liberated, why?
Galvanisation is a process used to prevent the rusting of which of the following?
