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JEE Main Chemistry question

ChemistrySurface ChemistryJEE Main

Not in JEE Main or NEET syllabus

The coagulation of 100 mL of a colloidal sol of gold is completely prevented by addition of 0.03 g of haemoglobin to it before adding 1 mL of 10% NaCl solution. Calculate the gold number of haemoglobin.

Answer: 3

Solution

of haemoglobin protects 100 mL of gold sol. Scaling down to the standard 10 mL reference volume used

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Question ID VK-144933