Only for above OTAs listed Please explain...Calculate the pH of a 1.0 M solution of NH4Cl Kb=1.8 x 10^-5 for NH3
Only for above OTA's... If 50.0 mL of a 0.1 solution of HOAc (Ka = 1.8 x 10^-5) has been titrated to the equivalence point with 0.1 M NaOH solution, what is the pH of the resulting solution? Please explain math. Thanks.
Only for 103139, 103897, or 103642
Only for above OTAs-all others called in. Please explain elementary the math for how to determine rate law and how to find the order of a reaction-please provide an example-totally lost. Thanks
•hat is the pH of a solution in water with a concentration of H3O+ ion of 3.5x10-8M. •Is this solution acidic or basic? •A solution in water has a pH of 5.25. What is the molarity of H3O+ ion in this solution? Question also attached
Please help me solve the problem in the attachment. First of all, I don't understand exactly what equivalent weight is. Secondly, I know that the coefficient of variation is CV = (s/x) x 100% So, what does the % analyte formula in the problem statement have to do with anything? Thanks.
% AL and NH4AL(SO4)2 in original sample
4. The aluminum in a 1.200-g sample of impure ammonium aluminum sulfate was precipitated with aqueous ammonia as Al2O3*H20. The precipitate was filtered and ignited at 1000 degrees C to give anhydrous Al2O3, which had a mass of 0.1798g. a) What is the %Al in the original sample? b) What is the %NH4Al(SO4)2 in the original sa ...continues
Absolute Deviation w/ given equation
We are using the book Analytial Chemsitry 7th edition by Skoog, West, Holler, and Crouch 6. Estimate the absolute deviation for the following calculation. List the result y and the absolute deviation. Round your answer so that it contains only significant digits. Y= 251(+/-1)*((860(+/-2))/(1.673(+/-0.006))= 129.025.70 ...continues
95% Confidence Level and Systematic Error
We are using the book Analytical Chemistry 7th edition by Skoog, West, Holler, and Crouch This question requires all equations to be written out. Thanks so much! To test the quality of work of a commercial laboratory, 15 replicate analyses of a purified benzoic acid (68.8% C, 4.953%H) sample were requested. The absolute ...continues
Standard Deviation and Spooled (may use excel)
Please show all equations. Also, excel can be used for this problem. Are you able to send the attached file? If not, just tell me how you did it on excel so I can understand how you got the answers. Thanks!! Six bottles of wine were analyzed for residual sugar, with the following results: see attachment a) Ev ...continues
Purpose: To introduce the student to a real world application of concepts learned so for in Analytical Chemistry. Apparatus: To be determined. Introduction: IN this experiment you will be given a beaker containing dirt. Dissolve .25 grams using any method/chemicals/devices possible. You are NOT allowed to use hydrofluor ...continues
