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How Do Metals React with Solution of Other Metal Salts

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Question

Select the word/s given which are required to correctly complete the blanks-

[ammonia, ammonium carbonate, carbon dioxide, hydrogen, hydronium, hydroxide, precipitate, salt, water]

(iii) If a piece of magnesium was put into a solution M (turns blue litmus red) ______ gas would be evolved.

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Solution

If a piece of magnesium was put into a solution M, hydrogen gas would be evolved.

Since, solution M turns red litmus blue, it is acidic in nature.

Metals generally react with acids to form salt and hydrogen gas.

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Q. From the list given below, select the word(s) required to correctly complete the blanks (i) to (v) in the following passage:
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A solution 'X' turns blue litmus red so it must contain (i) ________ ions; another solution 'Y' turns red litmus blue and therefore must contain (ii) _________ ions. When X and Y are mixed together, the products will be a (iii) ________ and (iv) _________. If a piece of magnesium was put into solution X, (v) ________ gas would be evolved.

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What would you observe when :

(a) blue litmus is introduced into a solution of hydrogen chloride gas,

(b) red litmus paper is introduced into a solution of ammonia in water,

(c) red litmus paper is introduced in caustic soda solution ?

Select the word/s given which are required to correctly complete the blanks-

[ammonia, ammonium carbonate, carbon dioxide, hydrogen, hydronium, hydroxide, precipitate, salt, water]

(ii) When solution M (turns blue litmus red) and O (turns red litmus blue) are mixed together, the products will be (3)_________ and (4) ______

Select the word/s given which are required to correctly complete the blanks -

[ammonia, ammonium carbonate, carbon dioxide, hydrogen, hydronium, hydroxide, precipitate, salt, water]

(i) A solution M turns blue litmus red, so it must contains (1) ______ ions; another solution O turns red litmus blue and hence, must contain (2) ______ ions.

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How Do Metals React with Solution of Other Metal Salts

Standard VIII Chemistry

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