2. What concentration of H (aq) corresponds to each of the following? pH = 10.92 РОН %3D4.32 РОН %3D 10.22 а. b. С.
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- 12. Metabolic acidosis caused by fixed acids is present when the anion gap is greater than A. 9 mEq/L B. 14 mEq/L C. 20 mEq/L D. 25 mEq/L1. Calculate the pH of the following solutions: A. [H+] = 1.36 x 10-9 M В. [ОН] —D 3.86 x 10-8 М 2. Calculate the pOH of the following solutions: A. [OH-] = 8.6 x 10-8 M В. рH %3D 3.2 3. What is the pH of a buffer prepared by mixing 100 ml 0.050 mM NAH2PO4 and 25 ml 0.075 mM Na2HPO4? (рКa1%32.2; рКо23 7.21; pКаз312.7)What is the pH of a cleaning solution with a [H3O*] = 7.4 x 10-10 м НзО"? А. 7.4 В. 7.13 C. 8.13 D. 9.00 E. 9.13
- 1) Calculate the required gram of Tris-Hcl to prepare 1M, 100 ml Tris-HCl (Tris Stock) with mol and Molarity formula. 2)Calculate the required gram of EDTA to prepare O.5M, 100 ml EDTA (EDTA stock) mol and Molarity formula. 3.) Calculate the required volume of Tris Stock to prepare buffer A which contains 25 mM Tris-Hcl with final volume is 100 ml by using M1V1 =M2V2 formula 4) Calculate the required volume of EDTA stock to prepare buffer A which contains 10 mM EDTA with final volume is 100 ml by using M1V1 =M2V2 formula 5)Do the same for Buffer B calculationsВ. 1. What concentrations should be used to prepare an ammonia-ammonium ion buffer with a pH of 9.50? Ka = 1.8 x 10* Write the value of pKa. a. b. Write the concentrations of the buffer.a. calculate the volume of 0.1 M H2PO4– required to prepare 100 mL of your assigned buffer. b. calculate the volume of 0.1 M HPO42– required to prepare 100 mL of your assigned buffer. 1. Assigned pH Value ___6.90_________ 2. pKa Value of Assigned Buffer ___7.20_________ 3. Ratio 0.5011
- You just made a 1.5M permanganate solution. What concentration is your potassium permanganate solution in percent? "K: 39.10 g/mole" "Mn: 54.94 g/mole" "O: 16 g/mole" "MW of KMnO4 is 158.04 g/mole" O a. 0.24% Ob. 20.1% O c. 15.8% O d. 23.7% O e. 2%how many grams of sr(no2)2 are needed to make 200 ml of 0.300M solution of sr(no2)2Normal arterial pH is 7.35 to 7. 45. Both metabolic and respiratory alkalosis have pH more basic compare to the normal arterial pH. The difference is 0.5 units. What is pH value in alkalosis? Niemann-Pick type C disease is a progressive neurological disease; symptoms include unsteady walking with uncoordinated limb movements, slurred speech, a difficulty in swallowing, epilepsy and tremor. This condition is due to the abnormal functioning of a lysosome. State the normal functions performed by this organelle.
- 25. What would be the new pH of a 1L buffer solution (pH=7.8) upon the addition of 3mL 0.0001 M HCI. (Buffer, pka=7.2) * A.) 4.9 O B.) 10.0 O C.) 3.0 O D.) 0.0001 O E.) No detectable effect3. Bacteria that have a composition of CSH702N. Determine the BOD for 30mg/L, following the following formula: CsH,02N + 02 CO2+ H20+ NH3 NH3 + 02 = N03+ H +H20 concontrntion in nart*4-37. What volume of 0.01000 M AgNO, would be required to precipitate all of the I in 200.0 mL of a solution that contained 24.32 ppt KI?