Question

1. PLease help!!
2. Reaction 1 (10 mL undiluted 1.0% IKI and 5 mL undiluted 3% H₂O₂)
3. Reaction 2 (10 mL diluted 0.5% IKI and 5 ml undiluted 3% H₂O₂)
4. Reaction 3 (10 mL undiluted 1.0% IKI and 5 mL diluted 2.25% H₂O₂)

1. How many moles of I₃K are present in Reactions 1 and 3? Show your work (include units).

Hint: The initial I₃K solution is 1% m/v (mass/volume) potassium triiodide in water. That means that 3 g H₂O₂ are present in every 100 mL of solution.

Hint: The molecular weight of I₃K is 419.812 g/mol.

2. What is the total volume of each reaction in liters?
3. What is [I₃K] present in Reactions 1 and 3 in units of molarity (M)?

Show your work (include units).

4. What is [I₃K] present in Reaction 2 in units of molarity (M)? Show your work (include units).

Hint: The I₃K solution is 0.5% m/v (mass/volume) hydrogen peroxide in water for Reaction 3.

Hint: You are repeating 14a – 14c for the 0.5% solution to find the answer here.

Answer 1

reacha) for 100 ml Solution 10 ml Solution 19 IK 2 g fl. mass of Izk a 19x come 100 mL I 0-lg. moles b) Torc volume of IK 2 mass - 2 0-19 molar mass 419-8129 mot 2 0.0002 moles. 0.0002 moles a 10 met JML a 15 mL & 1631 2 1.5x15²L moles IK 0.000238 moles Total volume (2n 15x102 20.01586 M :016m [ Ik z

- realtion at 100 ml contains 0.59 Ik كل وحدكملطوماام to mass of moles I Isk a o-org. 2 o-og 419.8129/mol Loooo 119 moles Cij k) = moles Ink 2 0:000119 miles Toral volume (in) 1.5x10²L I z o. ootaym ~ o-0079m ~ 0-008 m