The molecular weights of sodium chloride and glucose are determined by the depression of freezing point method. As compared to their theoretical molecular weights, what will be their observed molecular weights when determined by the above method ? Justify your answer.

Explanation

To determine the observed molecular weights of sodium chloride (NaCl) and glucose (C6H12O6) using the depression of freezing point method, we need to consider the dissociation of the solutes in solution.

### Step-by-Step Solution:

1. **Understanding the Concept**:
- The depression of freezing point method is based on colligative properties, which depend on the number of solute particles in a solution rather than the identity of the solute.
- The formula used to calculate the molecular weight (M) from the depression of freezing point (ΔTf) is:
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