Question

Board lerm-I Set-VHSGUU, 2012
Q.5. Write one word/term for the following:
(i) Water soluble base
(ii) A substance which dissociates on dissolving in
water to produce hydrogen ions. [H*(aq) ions)
(iii) A reaction between an acid and a base to form salt
and water
(iv) A substance which dissociates on dissolving in
water to produce hydroxide ions (OH ions]
[Board Term-I Set-1ZHNPNO, 2016]
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Answer 1

i) alkali

ii) hydrochloric acid [HCl]

iii)NaOH(aq)+HCl(aq)=NaCl(aq)+H2O(L)

iv)Sodium Hydroxide(NaOH)

Answer 2

(i) Alkali

(ii) acid

(iii) neutralization

(iv) base

Explanation:

(i) A base which is soluble in water is called as alkali.

Example: $NaOH$

(ii) Arrhenius acids are substances that ionizes to yield protons in aqueous solution.

$HCl\rightarrow H^++Cl^-$

(iii) An acid and base reacts together to undergo neutralization to form salt and water.

$HCl+NaOH\rightarrow NaCl+H_2O$

(iv)

Arrhenius bases are substance that ionizes to yield hydroxide ions in aqueous solution.

$NaOH\rightarrow Na^++OH^-$

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