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On addition of 1 mL solution of 10% NaCl...

On addition of `1 mL` solution of `10% NaCl` to `10 mL` gold sol in the presence of `0.0250 g` of starch, the coagulation is just prevented. What is the gold number of starch?

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To find the gold number of starch, we can follow these steps: ### Step 1: Understand the Definition of Gold Number The gold number is defined as the minimum amount of a protective colloid (in milligrams) required to prevent the coagulation of 10 mL of a standard gold sol when a specific amount of an electrolyte is added. ### Step 2: Identify Given Data From the question, we have: - Volume of gold sol = 10 mL ...
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