Trial 1 : 10 mL 1% I3K and 5 mL 3% H2O2 Trial 2: 10 mL .05% I3K and 5 mL 3% H2O2 trial 3: 10 mL 1% I3K and 5 mL 2.25% H2O2 1. (a) How many moles of H2O2 are present in rxn 1 and 2? (b) what is the total volume? 22mL of water used 2. How many moles of I3K are present in rxn 1 and 3?
Reaction 1 (10 mL undiluted 1.0% IKI and 5 mL undiluted 3% H2O2) Reaction 2 (10 mL diluted 0.5% IKI and 5 ml undiluted 3% H2O2) Reaction 3 (10 mL undiluted 1.0% IKI and 5 mL diluted 2.25% H2O2) 13. Answer the following. ( a) How many moles of H2O2 are present in Reactions 1 and 2? Show your work (include units). Hint: The initial H2O2 solution is 3% m/v (mass/volume) hydrogen peroxide in water. That means that 3 g...
PLease help!! Reaction 1 (10 mL undiluted 1.0% IKI and 5 mL undiluted 3% H2O2) Reaction 2 (10 mL diluted 0.5% IKI and 5 ml undiluted 3% H2O2) Reaction 3 (10 mL undiluted 1.0% IKI and 5 mL diluted 2.25% H2O2) 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...
Table 1: 10 mL Undiluted (1.0-2.0%) IKI and 5 mL 3% H2O2 mL water displaced Time (seconds) 2 20.6 4 43.9 6 66.9 8 98.7 10 130.6 12 155.5 14 180.3 16 242.4 18 278.8 20 340.1 22 361.2 Slope: 17.03 Inverse Slope: 5.87 x 10-2 Table 2: 10 mL 0.5-1.0% IKI and 5 mL 3% H2O2 mL water displaced Time (seconds) 2 86.8 4 115.2 6 139.8 8 197.6 10 256.8 12 296.0 14 321.4 16 397.5 18 471.3...
В. Titration of KHP Trial 1 Trial 2 Trial 3 Trial 4 0.321ps 0.00 mL 20mL Q302. 0.334 0.00 mL .10 mL v.O mL 0.328 O.00 mL Ke.20 mL 0.20 mL 1. Mass of KHP T-00 mL Initial buret reading 2. 510 5 10 mL Final buret reading 3. mL .20 ml. 4. Volume NaOH used Moles KHP used 5. mol mol mol mol 6. Moles NaOH used mol mol mol mol 7 Molarity of NaOH M. М М 8....
there is a volume of 10 ml of an aqueous solution of h2o2 at 3% mass. the density of this solution is 1.01 g / ml. determine the moles of H2O2 contained in the 10ml of original solution
DATA Data Trial 1 Trial 2 Trial 3 Volume of acid (mL) 10.0 10.0 10.0 Molarity of NaOH (M) 0.20 0.20 0.20 Start NaOH buret reading (mL) 0.00 27.02 53.61 End NaOH buret reading (mL) 27.02 53.61 80.86 Volume of NaOH used (mL) 27.02 26.59 27.25 Analysis Calculate the moles of NaOH used in each trial Trial 1 Trial 2 Trial 3 Write a balance equation for the reaction. Calculate the moles of HCl used in each trial Trial 1...
I
dont need #5. I’ve got that one. I’m just confused on the
others.
TY 2 1. Calculate the molarity of (mol/L) of 3% hydrogen peroxide and record it in Data Table 2. The term "3% concentration" is a weight-to-weight measurement, which means that there are 3 g solute per 100 g solvent. The molar mass of hydrogen peroxide is 34.01 g/mol. 2. Calculate the moles of hydrogen peroxide present in each trial. 3. Calculate the moles of oxygen generated...
using
the data above calculate the moles of sodiumthiosulfate reacted and
the mol/L of H2O2
21° + H2O2 + H 2 + H2O by varying reactant concentrations and reaction temperature. Results 3 40.0 40.0 40.0 40.0 10.0 10.0 10.0 5.0 20.0 10.0 20.0 0.0 30.0 5.0 30.0 10.0 Flask Number Volume of buffered lodide solution (mL) Volume of Thiosulfate solution (mL) Volume of water (mL) Volume of Peroxide solution (mL) Total Volume (mL) Stop Time (seconds) Start Time Total Time(...
Report Sheet Analysis of Cold Lozenges by Titration Trial 1 Trial 2 Trial 3 1. Initial reading of buret ml 2. Final reading of burct 20.2 ml. 40.1 ml. ml. 3. Volume of EDTA used ml ml ml Average volume of EDTA used (trials 1 & 2) ml Volume of EDTA used in Liters (L) Average moles of EDTA used (trials 1 & 2) moles 7. Average moles of zinc reacted moles Grams of zinc in each lozenge Milligrams of...
Chapter 15 Determination of the Hardness of Water 3, A 100-mL. sample of hard water is titrated with the EDTA solution in Problem 2. The same amount of Mg' is added as previously, and the volume of EDTA required is 31.84 mL a What volume of EDTA is used in titrating the Ca" in the hard water? mL h How many moles of EDTA are there in that volume? moles c. How many moles of Ca are there in the...