Two liquids `A` and `B` form an idea solution. What will be the vapour pressure at `27^(@)C` of a solution having `1.5 mol` of `A` and `4.5 mol` of `B`? The vapour pressure of `A` and `B` at `27^(@)c` is `0.116 atm` and `0.140 atm`, respectively.

Explanation

To calculate the vapor pressure of the solution formed by the two liquids A and B, we can use Raoult's Law, which states that the vapor pressure of each component in an ideal solution is directly proportional to its mole fraction in the solution.

### Step-by-Step Solution:

1. **Determine the total number of moles in the solution:**
- Moles of A = 1.5 mol
- Moles of B = 4.5 mol
- Total moles (n_total) = n_A + n_B = 1.5 + 4.5 = 6.0 mol
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