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Strength of Acids and Bases

Name the foll...

Question

Name the following metal:
A metal which is unaffected by dilute or concentrated acids.

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Solution

Metals which are unaffected by dilute or concentrated acid are gold, platinum and silver.
They are soluble in Aqua Regia , a $1 : 3$ solution of strong nitric acid and hydrochloric acid. They are the metals with the least amount of reactivity. As a result, they're used to make jewellery.

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Q. When metal X is treated with a dilute acid Y, then a gas Z is evolved which burns readily by making a little explosion.
(a) Name any two metals which can behave like metal X.
(b) Name any two acids which can behave like acid Y.
(c) Name the gas Z.
(d) Is the gas Z lighter than or heavier than air?
(e) Is the reaction between metal X and dilute acid Y, exothermic or endothermic?
(f) By taking a specific example of metal X and dilute acid Y, write a balanced chemical equation for the reaction which takes place. Also indicate physical states of all the reactants and products.

(a) Name one metal which reacts with dilute hydrochloric acid to produce hydrogen gas.

(b)Name one metal which does not react with dilute hydrochloric acid.

Name the following metals:

A metal that is unaffected by dilute or concentrated acids.

Q. A metal which is unaffected by dilute or concentrated acids. Name the metal

Q. A metal which is unaffected by dilute or concentrated acids is :

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Strength of Acids and Bases

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