Answer (3)
Can you do number 3 Construct and calculate a theoretical titration curve, showing and discussing all...
Construct and calculate a theoretical titration curve, showing and discussing all key areas, for the titration of 0.100 M NaOH with 50.0 mL 0.100 M HNO_2 (K_aHNO_2 = 7.1 times 10^-4)
Please I need Answers for ALL THESE QUESTIONS with explanation 2 A solution containing 52.4 mg/100ml of B (335 g/mole) has a transmittance of 45.2% in a 1.0 cm cell at 400nm. Calculate the "ABSORPTIVITY" of "B" at this wavelength Inna m L v inole -,.С/.x103 i-moll A Iron is treated with excess color 3.A 2.5ml aliquot of a solution containing 7.9ppm reagent to give a colored "Complex-product"; this was then diluted to 50ml with buffer. is 7,000 L/Mol/cm、.rm /つのフ...
calculate Quantitative Analysis Exp. #5. Determination of Cu % by Using Complexation Reaction 0.01 mol xoSLX Part 1. Preparation of reagents. Preparation of EDTA (0.01M) Dry EDTA in the oven for 2 hours. Dissolve needed grams in a 500 ml volumetric flask. 786/2 PESTA Preparation of known copper solution Place 0.2 8 to 0.25 g of pure Cu wire (or shot) in a 100 ml beaker. Add 15 ml conc. HNO, and 1 ml conc. H,SO. Place a watch glass...
please solve what you can and show your work. I'm not really good in chemistry??♀️ Home assignment: Chapter 4: Aqueous Reactions and Solution Stoichiometry 1) Of the species below, only is not an electrolyte. A) HCI B) Rb2804 C) Ar D) KOH E) NaCI 2) Aqueous potassium chloride will react with which one of the following in an exchange (metathesis) reaction? A) calcium nitrate B) sodium bromide C) lead nitrate D) barium nitrate E) sodium chloride 3) When aqueous solutions...
please help me with 3,4,5 Thank you! 3. Which sample had more moles of HA in it initially? Give reas on ! 4. Do the prelab calculation found in part IIIA below 5. Calculate the (expected) initial concentration of your acid solution (see Part IIIB below to get the initial volume of your acid solution) Acid 2 0 50 40 30 0 10 20 Volume of titrant (base) added (mL) III. Experimental Information and Procedures A.Background and preliminary calculation. You...
1.Calculate the number of moles of avidin added for each titration based on the added volume of avidin stock solution and a MW of 68,000 g/mol. Conduct the following steps for each titration: 1) Add Vbuffer of 0.02 M sodium phosphate buffer, pH 7, to a disposable plastic cuvette. 2) Add Vavidin of a solution of 10 mg/mL avidin in 0.02 M sodium phosphate buffer, pH 7. Mix thoroughly by micropipetting up and down. 3) Put the cuvette in the...
pre lab #2 & #3 vvith the end point of the titration, you can calculate the number on" of sodium hydroxide delivered from the stoichiometry. LEARNING OUTCOMES 1. Understand the concepts of an acid-base reaction and titration 2. Know what the end point is and how it applies to stoichiometry 3. Determine the acetic acid content in vinegar 4. Demonstrate correct titration technique 5. Use group data to draw a conclusion of the "best buy" brand of vinegar PRE-LABORATORY ASSIGNMENT...
What information then do you need? This is Chem 2 and not Org Chem. Titration of Vinegar Lab Report 1 /25 pts) Name: Part 1: Data and Calculations mass KHC.H.O. - 4.0744 g Molecular Weight potassium hydrogen phthalate KHC.H. - [1 pt) #moles KHP = [0.5 pts) Volume of solution = 250 ml_ L10.5 pts] Concentration of KHP = Mop = _M (1 pt) Volume of KHP Solution to be titrated mL = [1 pt) #mols of KHP to be...
can you do number 10,11,12,13,14,15,16,17,18,19 and 20? show calculations please FORMA 10) 6 moles of H2 will make how many moles of CHO, a)6 b) 12 c) 0.5 d) 1 e) 2 11. In which case is the element correctly matched with its combining ability? a) K:+ b) Mg: +2 c) Al: +3 d) a & b e), b, & c 12 Based on your knowledge of the periodic table, which would be a correct formula? a) CaS b) NaBr...
Please help! Ligand X forms a complex with both cobalt and copper, cach of which has a maximum absorbance at 510 nm and 645 nm, respectively. A 0.217 g sample containing cobalt and copper was dissolved and diluted to a volume of 100.0 mL. A solution containing ligand X was added to a 50.0 mL aliquot of the sample solution and diluted to a final volume of 100.0 mL. The measured absorbance of the unknown solution was 0.493 at 510...