Advertisements
Advertisements
प्रश्न
Explain, all alkalis are bases but all bases are not alkalis.
Advertisements
उत्तर
An alkali is a base which is soluble in water but all bases are not water soluble.
For example Ferric hydroxide [Fe(OH)3] and cupric hydroxide [ Cu(OH)2 ] are bases but these are not soluble in water but sodium hydroxide NaOH, calcium hydroxide Ca(OH)2 are bases and are also soluble in water.
Hence it is rightly said that all alkalis are bases but all bases are not alkalis.
Concept Insight : An alkali is a basic hydrooxide which when dissolved in water produces hydroxyl (OH-) ions as the only negatively charged ions.
Example : NaOH(aq) ⇌ Na+ + OH-
APPEARS IN
संबंधित प्रश्न
State some of the uses of mineral acids in industry.
Give the names and formulae of two strong bases and two weak bases.
Write any two important uses of bases.
What is the difference between an alkali and a base?
What is the difference between an alkali and a metal hydroxide?
State one observation for each of the following :
A small piece of zinc is added to dilute hydrochloric acid
Give the appropriate term defined by the statements given below :
The substance that releases hydronium ion as the only positive ion when dissolved in water.
Acids are ________ in taste.
Acid mixed with base forms ______.
Bring the soil sample of your area, find out if it is acidic, basic or neutral. Discuss with farmers if they treat the soil in any manner.
