When heated, a non-radioactive halogen, x, reversibly reacts with hydrogen to form HX. identify x and explain the reversibility of the reaction

X is Iodine

Explanation:

The halogens react with hydrogen to produce compounds called hydrogen halides.

The hydrogen halides are gases at room temperature. They dissolve in water to produce acidic solutions.

The different observations seen when halogens react with hydrogen is given below;

Fluorine: Explodes in the cold and dark, forming hydrogen fluoride

Chlorine: Explodes with a flame or in sunlight, forming hydrogen chloride

Bromine: Vigorous reaction with burning hydrogen, forming hydrogen bromide

Iodine: Very slow reaction when heated strongly, forming some hydrogen iodide.

From the above observations, it can be seen that iodine reacts least vigorously with hydrogen and requires heating for the reaction to proceed to product formation.

A reaction is said to be reversible if both the reactants and products are in equilibrium with each other . The equilibrium constant K also depends upon the Gibbs enthalpy (G) of the reaction . If change in G is negative , the reaction is feasible. However, the reaction between iodine and hydrogen is endothermic (G is positive ). Heat is supplied to favor the forward reaction and the reaction becomes reversible once heat is removed.

mg3n2 is known as magnesium nitride

explanation:

i don't think ke is an compound

water   molecules stay close to each other through cohesion, the collective action of hydrogen bonds between water molecules. cohesion plants draw water upwards from the root through the stem's transport tubes (xylem) to the leaf. this transport occurs even in large trees and against gravity. transpiration, evaporation of water from plant leaves, creates a tension on water molecules being pulled up from the stem and roots.

water also has high (the attraction of one substance to another) properties because of its polar nature. adhesion of water molecules to plant cell walls counteract gravity while water is transported from roots to leaves.

water exhibits a very high surface tension when compared to other liquids. surface tension is a property of a liquid that holds the surface together and allows it to resist an external force. by capillary action, the water forms concave menisci inside the pores. the high surface tension of water pulls the concavity outwards, generating enough force to lift water from the roots to the leaves of plants.

thus, cohesion, along with adhesion and surface tension creates a capillary action that keeps water molecules interacting and moving through the plants out to the leaf cells.

therefore, option d) is the correct answer.

explanation: