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Litmus

Which propert...

Question

Which property is not common to all inorganic acids?
(a) sour taste
(b) reacts with sodium bicarbonate to give carbon dioxide
(c) forms acid salts
(d) turns blue litmus red

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Solution

(c) forms acid salts

Carbonic acid is a weak inorganic acid and does not react with weak bases and thus does not form acid salts on reaction with them.

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Q. Sodium carbonate (

N a_{2} C O_{3}

) is an acidic salt whose solution in water turns blue litmus to red.

Q. The property which is not shown by acids is:
(a) they have sour taste
(b) they feel soapy
(c) they turn litmus red
(d) their pH is less than seven

Q. Alkalis

(a) have sour taste
(b) are soluble in water
(c) turn blue litmus red
(d) have all of these properties

Q. Indicate if the following statements are true or false.
(a) Oxides of non-metals dissolve in water to form some acids.
(b) Sulphites are salts formed from sulphuric acid.
(c) Phosphoric acid is tribasic.
(d) Nitric acid can only form normal salts.
(e) Hydrochloric acid can form both carbonates and bicarbonate.
(f) Carbonic acid can form both carbonates and bicarbonates.
(g) Water of crystallisation is found in anhydrous salts.
(h) Litmus turns red in the presence of alkalis.
(i) An acid reacts with a carbonate to form a salt, and hydrogen gas is obtained.
(j) Acid taste sweet.
(k) When the metal zinc reacts with hydrochloric acid, a salt called zinc chloride is formed.
(l) when metals react directly with acids, the reaction is called a displacement reaction.
(m) Sulphuric acid has the formula H₂SO₃.
(n) Carbon dioxide gas is given off as a result of displacement reactions between acids and metals.

1) HCL gas do not turn dry blue Litmus to red.give reason.

2) what are the materials required to show that acids reacts with carbonates and hydrogen carbonates to liberate carbon dioxide?

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