Question

A beaker is filled to the 500 mL mark with alcohol. What increase in volume (in mL) does the beaker contain when the temperature changes from 5° C to 30° C? (Neglect the expansion of the beaker, evaporation of alcohol and absorption of water vapor by alcohol.) The volume coefficient of expansion γγ for alcohol = 1.12 x 10-4 K-1

Answer 1

Answer:

"1.4 mL" is the appropriate solution.

Explanation:

According to the question,

• $v_0=500$
• $\alpha =1.12\times 10^{-4}$
• $\Delta \epsilon = 25$

Now,

Increase in volume will be:

⇒ $\Delta V = \alpha\times v_0\times \Delta \epsilon$

By putting the given values, we get

           $=1.12\times 10^{-4}\times 500\times 25$

           $=1.12\times 10^{-4}\times 12500$

           $=1.4 \ mL$