If molarity = molality and density of the solution is 2gm/ml then `W_("solute"):W_("solvent")` would be

Options

A. `1:2`
B. `2:1`
C. `1:1`
D. `1:3`

Explanation

To solve the problem, we need to find the ratio of the weight of solute to the weight of solvent given that molarity is equal to molality and the density of the solution is 2 g/mL.

### Step-by-Step Solution:

1. **Understanding Molarity and Molality**:
- Molarity (M) is defined as the number of moles of solute per liter of solution.
- Molality (m) is defined as the number of moles of solute per kilogram of solvent.
- Given that M = m, we can express this as:
...