List of top Chemistry Questions on Solutions asked in AP ECET CSE, AP ECET CE

Identify the pair of chlorides responsible for permanent hardness of water.

What is the degree of hardness (in ppm) of a sample containing 19 mg of MgCl\(_2\) (Molecular Weight = 95) in 2 kg water sample? (express it in terms of equivalents of CaCO\(_3\))

In the removal of permanent hardness of water by permutit process, Na\(^+\) ions of permutit are exchanged with which ions of water?

3 x 10\(^{22}\) molecules of Na\(_2\)CO\(_3\) (molecular weight = 106) present in 500 ml of solution. The normality of the solution formed is (N = 6 x 10\(^{23}\) mol\(^{-1}\))

x ml of 0.1 M NaOH solution is diluted with distilled water to get 250 ml of 0.01 M solution. The value of x (in ml) is

How many moles of urea is present in 250 ml of 0.2 M solution of it?