Question

Why does the forming capacity of soap increase in tap water in presence of sodium carbonate. ( Na2Co3)

( class 10)

Answer 1

Sodium carbonate has a good effect on foaming action of soap.

The tap water with which soap is agitated to form soap contains ca and magnesium salts dissolved in it.Sodium Carbonate will make it precipitate.As a result Sodium Carbonate will increase the rate of dissapearance of foam.

Answer 2

$<b>____________♦♦♥♦♦____________$

$\huge\mathfrak\purple{\:\:\:\:\:\:\:\:hello\:\:\:mate}$

$<b>____________♦♦♥♦♦____________$
$\tt{\pink{\huge{here\:is\:your\:answer}}}$
$<b>____________♦♦♥♦♦____________$

$<b>• The forming capacity of sodium increase in tap water in the presence of sodium carbonate is due to hardness of water is due to the presence of sulphates, chlorides or bicarbonate salts of Ca2+ or Mg2+ ions. Soaps are sodium or potassium salts of long chain fatty acids. When soap is added to hard water, the Ca2+ and Mg2+ ions present in hard water react with soap.$


$<b>• Cleansing action of soaps decreases in hard water. Hard water contains Calcium and magnesium ions which react with sodium carbonate to produce insoluble carbonates of higher fatty acids. This hardness can be removed by addition of Sodium Carbonate.$

$<b>____________♦♦☺♦♦____________$

$\sf\purple{By-\:\:\:RAKESH\:\:PATEL}$

$\mathbb{\red{\huge{\:\:\:\:\:THANK\: YOU}}}$
$<b>________▶▶▶⭐⭐⭐◀◀◀________$