Question

define temporary hardness of water how can you remove it ( for long type question answers)

Answer 1

on boiling carbon dioxide is drivin of and the soluble hydrogen carbonates are converted into insoluble carbonates and could be removed by filtration of decantation calcium carbonate and magnesium carbonate are precipitated leaving the waters of this is not very practical when large quantities of water are concerned or more practical method is to add a calculated quantity of slaked lime lime is first thought Oli mixed with water in a tank and then fed into another tank containing the hard water revolving pedals for Oli mix the two solutions most of the calcium carbonate settles down if there is any solid left over it is removed by a filter the process Goes by the name of clerks process when washing soda soda Ash is added to hard water the corresponding insoluble carbonate settle down and can be removed by filtration