Chemistry VIVA

 Determination of chloride content of water:

1. Principle:

Chlorides Present in water are estimated by titrating the given same of water using silver nitrate and Pottassium Chromate as Indicator.

           Ag+         +        Cl ^-1        =         Agcl(White ppt)

           2Ag+        +        Cro4^2-    =        Ag2Cro4(Red ppt)

    2. Which method of Argentometry are we using.

        Mohr's Method

    3. Applications of ArgentoMetry.

                1.Estimation os halides in the given sample solution

    4. SI units of Molarity.

              

       5. Which color indicates the end point of the titration.

                

                Brown Red

     6.What are units of hardness/chlorides present in water.

                ppm parts per million.

 

      7. What is Dilution formula.

                    

       8. What is the indicator used in this experiment .

                    Potassium Chromate

                     The color of potassium Chromate initially is yellow.

      9.Why is Potassium chromate used as an Indicator here.

                    Firstly it is soluble in water 

                    it works well with precipitate solutions

        10.Why is this method specifically called Argentometry?

                Since Silver is used which is called Argentine.

        11.Types of Hardness.

                Temporary:

                                Temporary hardness is a type of water hardness caused by the presence of dissolved bicarbonate minerals (calcium bicarbonate and magnesium bicarbonate)

                       Permanent Hardeness:

                

                    The presence of magnesium and calcium soluble salts in the form of chlorides and sulphates in the water.

            12.Units of Hardness of water.

                            

        13. How color changes occur from yellow to reddish brown.

                    Due to the conversion of Potassium chromate to Silver Chromate 

                                

14. Harmful effects of chlorine.

Alters taste of water, and high quantity can cause skin irritation and nose, throat, and eye irritation.

15. Equivalent weight of Chlorine.

            35.5