12-C. Calculate pCu2+ (to the 0.01 decimal place) at each of the following points in the titration of 50.0 mL of 0.040 0 M EDTA with 0.080 0 M Cu(NO3)2 at pH 5.00 : 0.1, 5.0, 10.0, 15.0, 20.0, 24.0, 25.0, 26.0, and 30.0 mL. Make a graph of pCu2+ versus volume of titrant.
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- 10-14. The Zn in a 0.7556-g sample of foot powder was titrated with 21.27 mL of 0.01645 M EDTA. Calculate the percentage of Zn in this sample.4. A 100-mL solution of the ion Mg2+ at a concentration of 0.0500 M buffered to pH 9.00 was titrated with 0.0500 M EDTA. (a) The formation constant is 1.0 x 1012 and aY(H) = 0.041 ( pH=9.00 ) . Calculate the value of the effective formation constant. (b) Calculate the concentration of Mg2+ at VEDTA = Ve . (c) What is the concentration of Mg2+ at VEDTA = 1.1 Ve ?The potentiometric titration data of 2,422 mmol chloride ion with 0.1000 M AgNO3 are as follows. What should the x and y axis values be to find the turning point using the first derivative?
- 12-E. Suppose that 0.010 0 M Mn2+ is titrated with 0.005 00 M EDTA at pH 7.00. (a) What is the concentration of free Mn2+ at the equivalence point? (b) What is the quotient [H3Y¯]/[H¿Y²¯] in the solution when the titration is just 63.7% of the way to the equivalence point?A 0.1 M solution of the weak acid HA was titrated with 0.1 M NaOH. The pH measured when Vbase = 2 Veq point was 4.62. Using activity coefficients, calculate pKa fA=0.854, HA = 1.00. For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac). BIUS 609 Paragraph Arial V 10pt Ix EVEA - X² X₂ >< ±RE✓ T " 医用医 东方 W ME M CH HEE → † O O لات 1 x 10 F5. A 300.0 mg sample containing Na,CO3, NaHCO3 and NaOH and inert material either alone or in some combination was dissolved and titrated with 0.1000 M HCI the titration required 24.41 mL to reach the phenolphthalein endpoint. And an additional 8.67 mL to reach the methyl red endpoint. Determine the composition of the sample and calculate the percent of each titrated component.
- COMPLEXOMETRIC TITRATION A deep well sample of 100 mL was titrated with 0.010 M EDTA at pH=10 (with Mg-EDTA-PH10 reagent) and consumed 31.95 mL using EBT indicator. Titration of another 100 mL of the same deep well sample with the same titrant but the pH was adjusted to 12.10 and murrexide as indicator consumed 24.25 ml to reach end point. Calculate: А. Total Hardness of water as CaCO3 В. ppm of Ca and Mg 76A 25.0025.00 mL solution of 0.088300.08830 M NaINaI is titrated with 0.051500.05150 M AgNO3AgNO3. Calculate pAg+pAg+ following the addition of the given volumes of AgNO3AgNO3. The KspKsp of AgIAgI is 8.3×10−178.3×10−17. 37.40 mLpAg+=37.40 mLpAg+= VepAg+=VepAg+= 47.30 mLpAg+=47.30 mLpAg+=You are doing a titration for a 16 mL mixture solution of 0.097 M in Cl and 0.100 M in I titrated with 0.100 M AGNO3. Calculate the pAg value of the titration solution after addition of 16 mL of 0.1000 M AGNO3 solution. Ksp AgCI = 1.77 × 10-10; KSp Agl = 8.30 x 10-17
- The Kjedahl procedure was used to analyze 256 µL of a solution containing 37.9 mg protein/mL. The liberated NH3 was collected in 5.00 mL of 0.033 6 M HCl, and the remaining acid required 6.34 mL of 0.010 M NaOH for complete titration. What is the weight percent of nitrogen in the protein? wt%Titration of 25.00ml of 0.100M I- with 0.0500M Ag+. Calculate pAg+ (=-log[Ag+]) at VAg+= 10.00ml; 49.50ml; 50.00ml; 50.50ml; 52.00ml. (Ksp,Ag+)= 8.3*10^-1725.0 cm3 of sodium hydroxide solution is tritrated against 0.2 mol dm–3 hydrochloric acid until the indicator just changes colour. 27.5 cm3 of the acid are required to reach the end point.Phenolphthalein is used as an indicator in the above experiment. What will be its colour change at the end point? From pink to yellow From pink to colourless From yellow to colourless From yellow to pink