The standard enthalpy change for the following reaction is 656 kJ at 298 K. 2 KI(s) 2 K(s) + I2(s) ΔH° = 656 kJ

What is the standard enthalpy change for this reaction at 298 K?

K(s) + 1/2 I2(s) KI(s)

The diagin dilutepage 6 of 12a6a5(a)fluorine, chlorine, bromine and iodine are placed in the same group of theperiodic table.state the common name used to describe elements in this group.(i)state the group in which the elements are placed and explain whythey are placed in that group.(ii)which of the above named elements is a solid at roomtemperature and pressure?