at what temperatures will methanol be in liquid form? choose all the correct answers. -95°c -43°c 0°c 25°c…
at what temperatures will methanol be in liquid form? choose all the correct answers. -95°c -43°c 0°c 25°c 67°c 89°c
Answer
Explanation:
Step1: Recall methanol's boiling and melting points
Methanol has a melting - point of approximately $-97.6^{\circ}C$ and a boiling - point of approximately $64.7^{\circ}C$. It is in liquid form between its melting and boiling points.
Step2: Check each option
- For $-95^{\circ}C$: Since $-97.6^{\circ}C<-95^{\circ}C < 64.7^{\circ}C$, it is a liquid.
- For $-43^{\circ}C$: Since $-97.6^{\circ}C<-43^{\circ}C < 64.7^{\circ}C$, it is a liquid.
- For $0^{\circ}C$: Since $-97.6^{\circ}C<0^{\circ}C < 64.7^{\circ}C$, it is a liquid.
- For $25^{\circ}C$: Since $-97.6^{\circ}C<25^{\circ}C < 64.7^{\circ}C$, it is a liquid.
- For $67^{\circ}C$: Since $67^{\circ}C>64.7^{\circ}C$, it is a gas.
- For $89^{\circ}C$: Since $89^{\circ}C>64.7^{\circ}C$, it is a gas.
Answer:
$-95^{\circ}C$, $-43^{\circ}C$, $0^{\circ}C$, $25^{\circ}C$