Question

The boiling points of x, y and z are $35{}^o$C, $56{}^0$C and $118{}^0$C respectively. Which one of the following correctly represents their boiling points in Kelvin scale?

• A. 306 K, 329 K, 391 K
• B. 308 K, 329 K, 391 K
• C. 308 K, 329 K, 392 K
• D. 329 K, 392 K, 308 K

Answer 1

The correct option is B 308 K, 329 K, 391 K

Kelvin (K) and degree Celcius (${}^0$C) are units of measuring temperature.
Where $0{}^0$C = 273 K
Hence,
$T\left(K\right)=273+t^{\circ }C$

Given, boiling point of x = $35{}^0$C
= 273+ 35 = 308 K,
boiling point of y = $56{}^0$C
= 273+ 56= 329 K and
boiling point of z = $118{}^0$C
= 273+ 118= 391 K

Hence, 308 K, 329 K and 391 K are boiling points of x, y and z respectively.