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Q: moles of HCI were consumed by the tablet and 0.0120 moles of HCI were initial les of NaOH were…
A: Excess Moles of HCl = = 0.0120 - 0.01031 = 0.00169 mol
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A: The given Chemical Equation can be completed and balanced as follows -
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Q: How can you define an indicator? ( for acid and base solutions )
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Q: Which of the followving refers to the substance being measured in titration?
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Q: Caclulate the initial concentrations of each of the ions when solutions A and B are mixed.
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Q: For the reaction: HCI 0° C
A: Two possible product can be formed. At high temperature 1,4- addition product (thermodynamic…
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- a) What mass of Fe(NH4)2(SO4)2•2H2O(s) is required to prepare a 500 mL solution containing 100 ppm (m:v) in Fe? b) Using this stock solution, what aliquot must be used to prepare calibration solutions, 100 mL volume, of the following concentrations: 0.100 ppm, 0.500 ppm, 2.00 ppm, 4.00 ppm, and 7.00 ppm.If 500mL of 0.10M Ca2+ is mixed with 500mL of 0.10M SO42-, what mass of calcium sulfate will precipitate? Ksp for CaSO4 is 2.40 • 10-5. express answer to 3 significant figures. And include units.KNO3 (aq) added to CaC2O4 (Ksp = 1.3 x 10-8) in solution will lead to __________ in solubility of the solid no effect then decrease increase no effect
- Aspirin powder = 0.8110g MW of Aspirin = 180g.mol-1 Volume of 0.5N HCl consumed in back titration = 23.50mL Volume of 0.5N HCl consumed in blank titration = 44.50mL Percent purity (USP/NF) = Aspirin tablets contain NLT 90.0% and NMT 110.0% of the labeled amount of aspirin (C9H8O4) What is the calculated weight (in grams) of pure aspirin?..Solution of Pb(NO3)2 and NaCl are combined, resulting in concentrations of 0.0050 M Pb(NO3)2 and 0.00250 M NaCl immediately upon mixing. select the correct description of the final solution, given that the Ksp of PbCl2 is 1.7x10^-5. A) NaNO3 Precipitates B) All solutes reamin soluable C) Pb(NO3)2 precipitates D) PbCl2 precipiates E) All Solutes precipitate.calculate the molarity of CaSO4 (s) in 0.450 M Na2SO4(aq) at 25°C. the ksp of CaSO4 is 4.93 x 10^-5. give answer in stnadard not scientific notation
- The mass of lead chromate that is dissolved in 250 mL of a saturated solution is _____ grams. (Ksp = 1.8 x 10-14) The attached photo is an example of how to solve the problemHow many grams of Ag2CO3 will be soluble in 250 ml of 0.180 M AgNO3? (Ksp of Ag2CO3 = 5.95 x 10-10) Cr2O72- + 14 H+ + 6 e ----- 2 Cr3+ + 7H2O Eo = - 1.25 VMnO4- + 8 H+ + 5 e ---- Mn2+ + 4 H2O Eo = - 1.27 VFe3+ + e ------ Fe2+ Eo = - 1.20 VZn2+ + 2e --------- Zn Eo = - 0.76 V ( R = 0.08205 L.atm/mol.K; R = 8.314 J/mol.K; F = 96481 C/mol electron) ΔG = ΔH – TΔS ; E = Eo - 0.0257 ln Q ; ΔG = ΔGo + RT ln QHow many grams of Ag2CO3 will be soluble in 250 ml of 0.180 M AgNO3? (Ksp of Ag2CO3 = 5.95 x 10-10)
- It is known that acid content has a major effect on theflavor of vinegars, but most cheaper vinegars are diluted similarly to 5% acidity Wt./vol. % is equivalent to gsolute per 100mL solution (so 5% is equivalent to 5 g acid/100 mL solution). a.) First, calculate the approximate molar concentration of acetic acid in the 5% wt./vol vinegar. b.) Next, calculate the expected molarity of acetic acid in the solution upon dilution by a factor of 5. Thank you!Tc-99m sulfur colloid is to be reconstituted with 75 mCi Tc-99m pertechnetate, to be drawn from an eluate with activity concentration of 325 mCi/mL. You will add constituents totaling 2.5 mL to the kit. What volume of eluate and of normal saline should be added to reach 5 mL final volume?A STOCK SOLUTION containing 0.1581 g/L K2CrO4 was prepared.In order to make the CALIBRATION STANDARD, 5 ml of the STOCK was transferredinto a 50ml volumetric flask and then diluted with an appropriate solvent.Calculate:(a) The ppm of K2CrO4 in the CALIBRATION STANDARD.(b) The molarity of K2CrO4 in the CALIBRATION STANDARD. (c) Calculate the molar absorptivity of K2CrO4 (at 371.0 nm). Assume that Beer's Law isobeyed over this concentration range.At 371.0 nm, this CALIBRATION STANDARD in a cell of path length 1.00 cm gave a %T of 59.752.