here two type of hardness
1-temporery
2-permanent
*temporery hardness-it is also known as carbonate hardness and alkiliny hardness.it is unstable hardness.it is remove by boiling.it is the due presence of carbonate.
soft water easily lather witth soap but hard water do not.
The foaming capacity depends on the hardness of water. Hard water does not give foams. Soft water will give foams.
A hill is hard to get up and a pill is hard to get down
lead is soft and copper is hard
Hard water refers to water that has very high mineral content, which affects its behavior in pipes and its affect on other chemicals like soap, where it often causes the formation of soap scum. Hard water also has a tendency to form deposits in pipes. Normally you wouldn't WANT to make water become hard, and there are systems for trying to reduce the "hardness" of water in the pipes of your home.
it is caused due to the salts of calcium and magnesium carbonates and bicarbonates. CaCO3, MgCO3, Ca(HCO3)2, Mg(HCO3)2
THE DIFFERENCE BETWEEN A PERMANENT HARD DISK DRIVE AND A REMOVABLE HARD DISK DRIVE A permanent drive is in housed in the system while the removable one is externally fixed. Basically they perform the same functions.
a Temporary Magnet lose its magnetism quickly, a Permanent Magnet is hard and it keeps it magnetism
soft water easily lather witth soap but hard water do not.
Hard water is the one that does not lather with soap. Permanent hard water can be converted to soft water by adding sodium carbonate (Na2CO3), or calgon or zeolite.
the difference is that soft water contains no dissolved minerals.the hard water contains dissolved minerals
The foaming capacity depends on the hardness of water. Hard water does not give foams. Soft water will give foams.
Hard water contain sulfates of calcium and magnesium, sometimes chlorides.Soft water contain calcium and magnesium bicarbonates.
Hard water contain calcium bicarbonate, magnesium bicarbonate in temporary hard water and calcium/magnesium sulfate in permanent hard water. Soft water contain doesn't contain these substances or only in very limited concentations.
Sodium palmitate produce a permanent lather with hard water..
absolutely nothing
one is hard