Credit will be given for strict adherence to instructions, for observations precisely recorded and for accurate inferences. All tests observations and inferences must be clearly entered in your answer book. in ink, at the time they are made.

 H is a mixture of an element and an organic compound. Carry out the following exercises on H. Record your observations and identify any gases evolved. State the conclusion you draw from the result of each test

(a) Put all of H in a beaker and add about 10cm\(^3\) of distilled water. Stir the mixture thoroughly and filter  Keep both the filtrate and the residue. Test the filtrate with litmus paper.

(b) Divide the filtrate into two portions

(i) To the first portion add two to three drops of acidified potassium tetraoxomanganate (VII) and warm

(ii) To the second portion. add a few drops of a saturated solution of sodium hydrogentrioxocarbonate (IV)

(c)(i) Put all the residue in a test tube and add 5cm\(^3\) of dilute hydrochloric acid

(ii) To the resulting solution from (C)(i) above add aqueous sodium hydroxide in drops until it is in excess

(iii) From your inferences in (c)(i) and (c)(i) state what would be observed if 5cm\(^3\) of dilute trioxonitrate (V) acid were added to a portion of the residue and the mixture was warmed.