water softener resin

Basic resins exchange their OH - ions with the other anions such as HCO 3 - , Cl - , SO 4 2 - , present in hard water. Basic resins, therefore, are also known as acid exchange resins. Fig: 11.5 - Ion-exchange process for water softeni..

We heat raw food to soften it. We freeze water into ice by cooling it in refrigerator. When we boil water in a kettle we observe the steam oozing from the mouth of the kettl..

After some time, the resins require regeneration as they become ineffective. Adding a strong acid regenerates acid resin and the basic resin is regenerated by treating it with a solution of a strong base. The regenerated resins are washed to remove Ca ..

Calgon is a trade name of a complex salt, sodium hexametaphosphate (NaPO 3 ) 6 . It is used for softening hard water. Calgon ionizes to give a complex anion: This results in the removal of calcium and magnesium ions from hard water in the form of a complex with Ca..

antiseptic and germicide preservative for biological and anatomical specimens substitute for tanning in leather industry - This is because it can harden glue or gelatine and thus renders them insoluble in water reactant in the manufacture of formaldehyde resins like..

Polyethylene has a low softening point of 383K and a low specific gravity of 0.22. The material is tough flexible highly insulating water resistin..

Sodium carbonate is used as washing soda in laundry as a cleansing agent for softening hard water in manufacturing glass, paper, soap and caustic soda as a valuable laboratory reagent in quantitative analysis to standardise acid solutions in qualitative analysis in ..

We heat raw food to soften it. We freeze water into ice by cooling it in refrigerator. When we boil water in a kettle we observe the steam oozing from the mouth of the kettle. When the cork is difficult to remove, we slightly heat the mouth of the bottle, so that the c..

Polythene is formed by the addition polymerization of multiple monomers of ethylene or ethene. When liquid ethylene is polymerized at high temperature and pressure, a resin of polyethylene is obtained. It can be melted spun or moulded as desired. Note that in addition polymerization there..

Sodium carbonate is a white crystalline solid, which can exists as anhydrous salt (Na 2 CO 3 ), monohydrate salt (Na 2 CO 3 .H 2 O), heptahydrate salt (Na 2 CO 3 .7H 2 O) and decahydrate (Na 2 CO 3 ..