Calc.the mass in gram of potassium iodide with formula mass 166.01g/mol that will be dissolved in 1 litre of distiiled water to give 0.40
To determine the mass of potassium iodide (KI) that needs to be dissolved in 1 liter of distilled water to obtain a 0.40 M solution, we can use the formula:
Mass = Molarity × Volume × Molar Mass
In this case, the molar mass of potassium iodide is given as 166.01 g/mol. The volume of the solution is 1 liter, and the desired molarity is 0.40 M. Plugging these values into the formula, we have:
Mass = 0.40 M × 1 L × 166.01 g/mol
Simplifying the calculation:
Mass = 66.404 g
Therefore, you would need to dissolve 66.404 grams of potassium iodide in 1 liter of distilled water to obtain a 0.40 M solution.