Question

which of the following isnot an acid salt 1( NAH2PO2) 2( NANAH2PO3) 3( NAH2PO4) 4( NA2HPO4) ​

Answer 1

Answer:

1. Out the four,NaH2PO3,NaH2PO4 and Na2HPO4 are acidic salts. Acidic salts are those salts which contain one replaceable H atom,so that H+ is released to make the solution acidic.

2. NaH2PO2 is a neutral salt as it contains no replaceable hydrogen.

3. The salts formed above are formed by sodium hydroxide reacting

                   (a) with H3PO2 to give NaH2PO2,which has only one O-H bond and only one H can be replaced in it and no more is available so it is neutral.

                    (b) with H3PO3 to give NaH2PO3 which has two O-H bonds ,that can give 2 H,out of which one is still available,so acidic.

                    (c) with H3PO4 (have 3 replaceable H,3 O-H bonds) ,to give NaH2PO4 which has 2 more H left to be replaced and Na2HPO4 which has 1 H to be replaced.

Answer 2

Answer:

Gaurav 4. NA2HPO4 is not an acid salt.

Explanation:

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