This is all that was given, please help l. Rate Measurement-Solution 1 Note: Pre

Question

This is all that was given, please help l. Rate Measurement-Solution 1 Note: Preparing all the necessary solutions for each portion of this experiment before beginning to measure the reaction rates of each reaction increases the efficiency and accuracy of these experiments. A. Clean and dry a 250 mL Erlenmeyer flask, a 100 mL beaker and 3 small test tubes. B. Prepare Solution 1 in the 250 ml Erlenmeyer flask by adding the following solutions at the specified concentrations i. 25.0 mL of 0.2 M potssium iodide (K1) ii. 1.0 mL of starch solution 6 EXPERIMENT III: CHEMICAL KINETICS

Explanation / Answer

Reaction is only depends on concentration of Na2S2O3 because rate of reaction change with change of volume of Na2S2O3.

taking experiment 2& 3

rate = - [Na2SO3]/dt = mole of Na2S2O3/volume / time = 7.84x10^-3/271 = 2.89x10^-5 M/s

3- concentration of KI= mole of KI / Volume of solution = 25x0.2 x10^-3/103x10^-3 = 4.85x10^-3

concentration of( NH4)2S2O8= mole of ( NH4)2S2O8 / Volume of solution = 4.85x10^-3

2- rate = k [(S2O8 - -][I-]

unit of rate constant = m/L-s

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.