Ca(OH)2
NH3
NaOH
Al(OH)3
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An alkali is a basic hydroxide or ionic salt of an alkali metal or alkaline earth metal element, which is soluble in water. Only few alkalis are known, examples, sodium hydroxide (NaOH), potassium hydroxide (KOH), calcium hydroxide (Ca(OH)2), calcium carbonate (CaCO3), and magnesium hydroxide (Mg(OH)2. Ammonia is also classified as an alkali, though it is not a hydroxide or ionic salt. This is because ammonia is a very soluble base.
an alkali is a base that is soluble in water.NH3, NaOH and Ca(OH)2 are soluble base, while Al(OH)3 is amphoteric and insoluble in water. the right answer is D Al(OH)3
Myschool u will not kill me
First of all what is an alkali?
An alkali is a base that is soluble in water.
An hydroxide is different from an alkali.
Its an oxide of a metal with an hydroxyl ion (OH^-)
NH3 is a alkali altho its a weak one
Why?
Cos it's a base (has a PH greater than 7) and it's soluble in water.
The correct answer is D
D is correct. why ?
Alkaline substances are those that have a pH greater than 7. Among the options you provided, Al(OH)3 (option D) is not an alkali; it's an amphoteric hydroxide.
Here is the correct explanation:
please,ammonia is a weak base..even though its not ionic or an hydroxide..that is because it is soluble..please give correct answers here..the correct ans is alluminium hydroxide..tnkz
in that question d only answer is D ... Bcos ammonia is very soluble in water... So ammonia is an Alkali
Nh3 (ammonia) is an alkali, even though it is not an alkali metal or an alkali earth metal it is special, due to its ability to readily dissolve in water, therefore the answer is D Al(OH)3 ... Dont believe me? Check the net
