Question

Distinguish between real and apparent cubic expansivities of a liquid.

a) Real cubic expansivity measures expansion, while apparent cubic expansivity is a theoretical concept.
b) Real cubic expansivity is the actual expansion of a liquid, while apparent cubic expansivity considers experimental errors.
c) Real cubic expansivity deals with gaseous expansion, while apparent cubic expansivity relates to liquid expansion.
d) There is no difference between real and apparent cubic expansivities.

Answer 1

Real cubic expansivity is the actual expansion of a liquid with temperature, while apparent cubic expansivity accounts for the expansion of the container, which may affect the observed expansion of the liquid.

Step-by-step explanation:

The terms real cubic expansivity and apparent cubic expansivity both relate to the expansion of liquids when heated, but they describe different phenomena. Real cubic expansivity refers to the actual volumetric expansion of a liquid relative to its original volume with temperature increases. On the other hand, apparent cubic expansivity takes into account that when a liquid expands in a container, some of the expansion may be obscured by the expansion of the container itself. Therefore, the apparent expansion is the observable expansion, which might be less than the real expansion if the container also expands.

Considering the choices given, the correct answer is b) Real cubic expansivity is the actual expansion of a liquid, while apparent cubic expansivity considers the experimental container's expansion alongside the liquid's expansion.