Question

The melting point of solid $C{O}_2$ on degree celcius scale is $-{77}^o$C. What is the melting point in Kelvin scale ?

• A. 296 K
• B. 0 K
• C. 100 K
• D. 196 K

Answer 1

The correct option is D 196 K

The temperature at which a liquid starts melting is known as its melting point.

The relation between Celsius (${}^o$C) and Kelvin (K) scale is as follows-
Kelvin = ${}^{\circ }C+273$

The melting point of solid $C{O}_2$ in Celcius scale is $-{77}^{\circ }C$.
So, the melting point of solid $C{O}_2$ on Kelvin scale would be-
${100}^{\circ }C=273+(-77)=196K$