A chemist prepares a solution of potassium iodide (KI) by measuring out 67.7. mu mol of potassium iodide into a 400. mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in mmo1L of the chemist's potassium iodide solution. Round your answer to 3 significant digits.

The concentration of potassium iodide in the solution is

Explanation:

To calculate the molarity of solution, we use the equation:

We are given:

Micro moles of potassium iodide =

Volume of solution = 400 m

Putting values in above equation, we get:

Hence, the concentration of potassium iodide in the solution is

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.