Advertisements
Advertisements
प्रश्न
Explain, all alkalis are bases but all bases are not alkalis.
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
Why do HCl, H2SO4, HNO3, etc., show acid character in aqueous solutions while solutions of compounds like C6H12O6 (glucose) and C2H5OH (alcohol) do not show acidic character?
Why is it wrong to treat a bee sting with vinegar?
Give a balanced equation for reaction of nitrogen dioxide with water.
Give one example in the following case:
A hydrogen containing compound which is not an acid.
Out of HCl and CH3COOH, which one is a weak acid and why? Describe an activity to support your answer.
Which of the following statements is true for acids?
Which of the following set of substances contain acids?
Write the important uses of hydrochloric acid and sulphuric acids.
Complete the following equation.
H+ + H2O → ______.
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.
