# Experiment to Determine Apparent Cubic Expansivity of Liquid

#### Topic Content:

- Experiment to Determine Apparent Cubic Expansivity of Liquid

### Experiment to Determine Apparent Cubic Expansivity of Liquid:

- Weigh a clean dry densityDensity is the measurement of how tightly a material is packed together i.e. how closely the particles are packed in the material. The tighter the material is packed the more its... More bottle and record mass, M
_{1}.

- Fill the bottle with liquid whose apparent cubic expansivity is required, replace the stopper, and dry

- Weigh the bottle and liquid, M
_{2}

- Suspend the density bottle in a water bath and record the initial temperature of the water bath, \( \scriptsize \theta_1\)

- Heat the water until it reaches boiling point, some liquid will be expelled through the orifice (opening) of the bottle stopper.

- Continue heating the water bath until no liquid is expelled from the space around the stopper.

- Note and record the final temperature of the water bath, \( \scriptsize \theta_2\)

- Remove the bottle from the bath and reweigh, M
_{3}

The Apparent cubic expansivity is calculated as follows:

Mass of empty bottle = M_{1}

Mass of bottle and liquid = M_{2}

Final mass of bottle and liquid = M_{3}

Initial temperature of water = \( \scriptsize \theta_1\)

Final temperature of water = \( \scriptsize \theta_2\)

Mass of liquid expelled = M_{2} – M_{3}

Mass of remaining liquid = M_{3} – M_{1}

Apparent expansivity = \(\scriptsize Î³_Î±\)

Since mass is proportional to volume,

Apparent cubic expansivity,

\( \scriptsize Î³_a = \normalsize \frac {mass\: of\: liquid\: expelled}{mass\: of\: liquid\: remaining \: \times \:temperature\: rise}\)\( Î³_a = \frac {M_2 \:- \:M_3}{(M_3\: – \:M_1) \: \times \: (\theta_2\: – \:\theta_1) }\)

### Example 1.3.1:

A density bottle contains 44.25 g of a liquid at 0Â°C and 42.02 g at 50Â°C. Calculate the real cubic expansivity of the liquid. (Linear expansivity of glass = 1.0 Ã— 10^{-5}K^{-1})

**Solution**

You are viewing an excerpt of this Topic. Subscribe Now to get **Full Access** to **ALL** this Subject's Topics and Quizzes for this Term!

Click on the button **"Subscribe Now"** below for Full Access!

### Subscribe Now

**Note:** If you have **Already Subscribed** and you are seeing this message, it means you are logged out. Please **Log In** using the **Login Button Below** to **Carry on Studying!
**

can someone please explain the third example, its very confusing

This is very helpful and I aced my test