Question

the table below shows the freezing points of four substances. substance freezing point (°c) benzene 5.50 water 0.00 butane -138 nitrogen -210. the substances are placed in separate containers at room temperature, and each container is gradually cooled. which of these substances will solidify before the temperature reaches 0°c? benzene water butane nitrogen

Explanation:

A substance solidifies when the temperature reaches its freezing point. We need to check which substance has a freezing point below \(0^{\circ}C\). Benzene has a freezing point of \(5.50^{\circ}C\) (above \(0^{\circ}C\)), water has a freezing point of \(0.00^{\circ}C\) (not below \(0^{\circ}C\)), butane has a freezing point of \(- 138^{\circ}C\) (below \(0^{\circ}C\)), and nitrogen has a freezing point of \(-210^{\circ}C\) (but we are only asked for the one that solidifies before \(0^{\circ}C\), and butane's freezing - point is higher than nitrogen's among the two below \(0^{\circ}C\)).

Answer:

butane