A0.99 m aqueous solution of an ionic compound with the formula mx has a freezing point of -2.6 ∘c . calculate the van't hoff factor (i) for mx at this concentration.

Formula for the depression in freezing point is:

 -(1)

where is depression in freezing point,

is Van't Hoff factor,

is molal freezing point depression constant, and

is molality of the solution.

Molality of the solution,  (given)

Molal freezing point depression constant of water,

Depression in freezing point of solution,

Substituting the values in equation (1):

Hence, the Van't Hoff factor (i) for is 1.412.

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.

answer: mole of the gas

answer: mole of the gasexplanation: