Question

When water is heated from 0 to 4 degree its density first decrease than increase?

Answer 1

, the reaction of t‐butyl ethyl ether with HI gives t‐butyl iodide and ethyl alcohol.

Answer 2

$\mathfrak{answer}$

➡Density of water between 0 and 4 Celsius is influenced by two key opposing forces caused due to Thermal kinetic expansion and H-bonding.

Thermal kinetic expansion force is simply the force that causes molecules to move around more when the there is a rise in temperature. Because of this higher thermal forces the molecules moves apart and so become less dense.

Hydrogen bonding force can be simply explained as the force of attraction between the hydrogen attached to an electronegative atom of one molecule and an electronegative atom of a different molecule.

In case of water, the Hydrogen bonding force is weaker (It is about 23 kJ mol–1 compared to the O–H covalent bond strength of 492 kJ mol–1).