TS EAMCET · Chemistry · Surface Chemistry
The gold numbers of gelatin, haemoglobin and sodium acetate are \(5 \times 10^{-3}, 5 \times 10^{-2}\) and \(7 \times 10^{-1}\), respectively. The protective actions will be in the order
- A Gelatin \( < \) haemoglobin \( < \) sodium acetate
- B Gelatin \(>\) haemoglobin \(>\) sodium acetate
- C Haemoglobin > gelatin > sodium acetate
- D Sodium acetate \(>\) gelatin \(>\) haemoglobin
Answer & Solution
Correct Answer
(C) Haemoglobin > gelatin > sodium acetate
Step-by-step Solution
Detailed explanation
The lyophilic colloids differ in their protective power. The protective power is measured in terms of gold number. It may be noted that smaller the value of the gold number, greater will be the protecting power of protective colloids. Therefore, the reciprocal of gold number is…
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