Cleaning capacity of soap in soft & hard water, Science practical GSEB for std 8 to 12.

Soap cleaning on hard and soft water

Soap Cleaning capacity

AIM :  To study the cleaning capacity of a sample of soap in soft water and hard water..

THEORY :  Hard water  contains salts of Ca and Mg that affects the cleaning capacity of soap. Hard water consumes  more soap.

APPARATUS :  250 ml glass beaker, glass rod, white cloth (two pieces of 7 cm * 7 cm), Hard water, Salts, Calcium Chloride, Magnesium chloride, Washing Soap, water soluble ink,

MATERIALS : Standard washing soap, distilled water, water soluble ink, calcium chloride or magnesium chloride.

Soap cleaning capacity Practical

Soap cleaning capacity Practical

Soap cleaning capacity Practical

Soap cleaning capacity Practical

Soap cleaning capacity Practical

Observation

( i)  Type of water in beaker no (1) :

( ii)  Type of water in beaker no (2) :

( iii)  From white cloth in which beaker ink-blot is removed (1) or (2) ?

Conclusion :

Uses :

Soft water give rich lather with soap, therefore its cleansing capacity is more than hard water. No more soap is wasted in soft water.