As potassium is so reactive that it reacts vigorously with water or catches fire. Than how it can be used as a fertilizer for plants as it is added to the soil does it not reacts with water used for irrigation of plants it must catch fire there also .

Open in App

Solution

Potassium is so active that it never occurs free in nature. It always occurs in compounds, combined with other elements.

Potash is defined as K2O and is used to express the content of various fertilizer materials containing potassium, such as muriate of potash (KCI), sulfate of potash (K2SO4), double sulfate of potash and magnesium (K2SO4 2MgSO4), and nitrate of potash (KNO3).

So Compound form of potassium is used as fertilizer which does not cause fire when reacts with water.

Suggest Corrections

Similar questions

(a) Name a metal for each case:
(i) it does not react with cold as well as hot water but reacts with steam.
(ii) It does not react with any physical state of water.

(b) When calcium metal is added to water, the gas evolved does not catch fire but the same gas evolved on adding sodium metal to water catches fire. Why is it so?

Q. Bleaching should not be used for acidic water as it reacts with them to:

Q. Bleaching powder should not be used for acidic water as it reacts with them to :

Q. Assertion: Sodium reacts vigorously with cold water but magnesium does not react with cold water.
Reason: Sodium is more reactive than magnesium.

Q. A metal

X

does not react with cold water but reacts with hot water to form its hydroxide.Metal

X

is more reactive than iron but less reactive than sodium.
Metal

X

is:

Join BYJU'S Learning Program