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A glass flask of volume one litre at 0^(...

A glass flask of volume one litre at `0^(@)C` is filled, level full of mercury at this temperature. The flask and mercury are now heated to `100^(@)C`. How much mercury will spill out if coefficient of volume expansion of mercury is `1.82 xx 10^(-4)//^(@)C` and linear expansion of glass is `0.1 xx 10^(-4)//^(@)C` respectively?

A

`2.48xx10^(-2)L`

B

`1.52xx10^(-2)L`

C

`1.53xx10^4L`

D

`1.52xx10^(-4)L`

Text Solution

AI Generated Solution

The correct Answer is:
To solve the problem, we need to determine how much mercury will spill out of the glass flask when both the flask and the mercury are heated from \(0^\circ C\) to \(100^\circ C\). We will use the coefficients of volume expansion for mercury and linear expansion for glass to find the answer. ### Step-by-Step Solution: 1. **Identify Given Values:** - Initial volume of the flask and mercury, \(V_0 = 1 \, \text{litre}\) - Coefficient of volume expansion of mercury, \(\beta_{Hg} = 1.82 \times 10^{-4} \, \text{°C}^{-1}\) - Coefficient of linear expansion of glass, \(\alpha_{glass} = 0.1 \times 10^{-4} \, \text{°C}^{-1}\) - Temperature change, \(\Delta T = 100^\circ C - 0^\circ C = 100^\circ C\) 2. **Calculate the Volume Expansion of Mercury:** The volume expansion of mercury can be calculated using the formula: \[ V_{Hg} = V_0 (1 + \beta_{Hg} \Delta T) \] Substituting the values: \[ V_{Hg} = 1 \, \text{litre} \times \left(1 + 1.82 \times 10^{-4} \times 100\right) \] \[ V_{Hg} = 1 \, \text{litre} \times (1 + 0.0182) = 1 \, \text{litre} \times 1.0182 = 1.0182 \, \text{litres} \] 3. **Calculate the Volume Expansion of the Glass Flask:** The volume expansion of the glass flask is given by: \[ V_{glass} = V_0 (1 + \beta_{glass} \Delta T) \] The volumetric expansion coefficient of glass (\(\beta_{glass}\)) can be calculated from the linear expansion coefficient: \[ \beta_{glass} = 3 \alpha_{glass} = 3 \times 0.1 \times 10^{-4} = 0.3 \times 10^{-4} \, \text{°C}^{-1} \] Now substituting the values: \[ V_{glass} = 1 \, \text{litre} \times \left(1 + 0.3 \times 10^{-4} \times 100\right) \] \[ V_{glass} = 1 \, \text{litre} \times (1 + 0.003) = 1 \, \text{litre} \times 1.003 = 1.003 \, \text{litres} \] 4. **Calculate the Volume of Mercury that Spills Out:** The volume of mercury that spills out can be found by subtracting the expanded volume of the glass flask from the expanded volume of mercury: \[ V_{spill} = V_{Hg} - V_{glass} \] \[ V_{spill} = 1.0182 \, \text{litres} - 1.003 \, \text{litres} = 0.0152 \, \text{litres} \] ### Final Answer: The volume of mercury that will spill out is approximately \(0.0152 \, \text{litres}\).
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