Calculate the mass of KI in grams required to prepare 7.00 multiplied by 102 mL of a 2.60 M solution
To calculate the mass of KI required to prepare the solution, you need to use the formula:
mass = volume (in liters) * concentration (in mol/L) * molar mass (in grams/mol)
Step 1: Convert the volume of the solution from milliliters (mL) to liters (L).
The given volume is 7.00 * 10^2 mL. To convert this to liters, divide by 1000:
volume = 7.00 * 10^2 mL / 1000 mL/L = 7.00 L
Step 2: Calculate the mass of KI using the formula.
The given concentration is 2.60 M. The molar mass of KI can be obtained from the periodic table:
Molar mass of KI = atomic mass of K (39.10 g/mol) + atomic mass of I (126.90 g/mol) = 166.00 g/mol
mass = volume * concentration * molar mass
mass = 7.00 L * 2.60 mol/L * 166.00 g/mol
Now, perform the calculation:
mass = 3024 g
Therefore, the mass of KI required to prepare 7.00 * 10^2 mL of a 2.60 M solution is 3024 grams.