Question

1.25 mg of Gum Arabica(gold number=0.25)is added to 50ml of standard gold sol.What maximum value (in ml) of 10% Nacl solution can be added to this gold sol without causing coagulation.

Answer 1

Answer:

nice

Explanation:

1.25 mg of Gum Arabica(gold number=0.25)is added to 50ml of standard gold sol.What maximum value (in ml) of 10% Nacl solution can be added to this gold sol without causing coagulation.

Answer 2

Given:   1.25 mg of Gum Arabica(gold number=0.25) and 50ml of standard gold sol.

To find The maximum value (in ml) of 10% NaCl solution can be added to this gold sol without causing coagulation.

Solution:  Gold number of gram Arabic = 0.25

so, 1.25 mg of gum Arabic is added in 50ml.

    therefore,      50ml    -----  1.25 mg

                           100ml ------- (1.25 / 50) x100

               now, 10% of nacl solution added is

                       (1.25 / 50) x 100 of 10%

                   so, = 10% of 2.4     ( 2.4 comes on solving (1.25/50)x 100)

                         = (2.4/10)x100

                         = 24ml

Hence 24ml of NaCl solution can be added to gold sol without causing coagulation.