Asked by Ben
how many grams of potassium iodide can be produced by the reaction of 150 grams of iodide and 45.6 grams of potassium?
Answers
Answered by
DrBob222
This is a limiting reagent (LR) problem.
I know that because amounts are given for BOTH reactants.
2K | i2 ==> 2kI
mols K = grams/molar mass
mols I2 = grams/molar mass
Using the coefficients in the balanced equation, convert mols K to mols KI.
Do the same for mols I2 to mols KI. It is likely that the values will not agree; the correct value in LR problem is ALWAYS the smaller value and the reagent producing that value is the LR.
Using the smaller value for mols KI, convert to g. g = mols x molar mass.
I know that because amounts are given for BOTH reactants.
2K | i2 ==> 2kI
mols K = grams/molar mass
mols I2 = grams/molar mass
Using the coefficients in the balanced equation, convert mols K to mols KI.
Do the same for mols I2 to mols KI. It is likely that the values will not agree; the correct value in LR problem is ALWAYS the smaller value and the reagent producing that value is the LR.
Using the smaller value for mols KI, convert to g. g = mols x molar mass.