Q: Why was gravity filtration used instead of evaporation to isolate the calcium carbonate?
A: Calcium Carbonate is white, odorless powder or colorless crystals. Practically insoluble in water.…
Q: Why is rinsing of the burettes both with distilled water and solution a critical step in titration?
A: Please find your solution below : In chemical analysis, titration (volumetric analysis) is a…
Q: 2.1 The Ksp of Ca3 (PO4), is 1.3 × 10-26. Estimate the solubility of this salt in units of g. L-1.…
A: Let, Ksp be the solubility product. S be the solubility. Ksp =1.3×10-26
Q: Solve the preparation of 375ml of 40 ppt Cl-(parts per thousand) from 0.01 M PbCl2
A: Ppt means parts per thousand. 1 ppt of a substance means 1g of the substance in 1000g of its…
Q: What is the method of separation or chemical reaction of a 500 g calcium polysulphide and a 1.5 kg…
A: Answer - According to the question - Given - Calcium polysulfide (CaS5) is also Anti-Infective…
Q: Q: 1: The distribution constant for iodine between an organic solvent and HO is 85. Find the…
A: From given The distribution constant for iodine between an organic solvent and H2O is 85. We need…
Q: If 56.0 mL of a 0.85 M Ca(NO3)2 was mixed with 87.5 mL of 0.70 M NaCl, what is the final…
A: By writing balanced chemical equation and using mole mole analysis we can solve this problem.
Q: What are the scientifically proven bioactivity of VCO that is beneficial to human health?
A: As per the guideline, Since you have asked multiple questions, we will solve the first question for…
Q: Why is it better to use the ±0.0001 g balance in AS 211 than the one you used in CHM 151 (goes to…
A: it better to use the ±0.0001 g balance in AS 211 than the one you used in CHM 151 (goes to ±0.01 g)…
Q: Explain how a Gravimetric Analysis is performed.
A: Gravimetric analysis is a class of lab techniques used to determine the mass or concentration of a…
Q: The distribution coefficient for iodine between CCl4 and H2O is 85. Calculate the concentration of…
A: Given : Distribution coefficient (K) = 85 concentration of I2 = 1.00 x 10-3 Calculate the…
Q: Why is it common practice to boil the solution near the equivalence point in the standardization of…
A: The reason is discussed as shown below, The reaction of sodium carbonate with HCl results to form…
Q: Why is filtration of a gelatinous precipitate done while the solution is still hot?
A: The filtration of a gelatinous precipitate done while the solution is still hot.
Q: What mass of ZnS (Ksp = 2.5 x 10-22) will dissolve in 300. mL of 0.050 M Zn(NO3)2? Ignore the basic…
A: The mass of Zinc Sulfide has to be given, The balanced chemical equation is, Zns(s)⇔Zn2+(aq)+S2-(aq)…
Q: Calculate the amount of potassium chloride needed to prepare a 60 mL ORS based on the given…
A:
Q: The pNa of a mixture prepared by mixing 200 ml of 0.00063 M of NaCl and 300 ml of 0.00040 M in…
A: Given: Concentration of NaCl solution = 0.00063 M Volume of NaCl solution = 200 ml Concentration of…
Q: If 50.0 mL of Thiosulfate solution are required to titrate the l2 liberated from an excess of KI by…
A: Given: Volume of S2O32- solution = 50.0 mL. Mass of KIO3 reacted = 0.300 g. The reactions taking…
Q: What is the minimum distribution constant that permits removal of 99% of a solute from 50.0 mL of…
A: What is the minimum distribution constant that permits removal of 99% of a solute from 50.0 mL of…
Q: What is the solubilty of PbF2 in water? the Ksp for PbF2 is 2.7 x 10^-8
A: PbF2→Pb+2+2F- S 2S
Q: Write a mass balance for a solution of Fe2(SO4)3 if the species are Fe3, Fe(OH)2, Fe(OH)2,…
A: Mass balance states that the amount of species covey to a solution is equal to the addition of mass…
Q: Calculate the solubility for N-Phenylsuccinimide at 152 to 154 melting point with 1 g?
A:
Q: What is the solubility of SrSO4 (in g/L) in 0.23 M sodium sulfate? (Ksp for SrSO4 is 2.5 x 10-5)
A:
Q: What would the Ksp for silver chromate be, if it was measured in a 0.10 M solution of sodium…
A: Silver chromate when dissolves dissociate into 2 moles of Ag+ and 1 mol of CrO42-.
Q: Which method would be most appropriate for the purification of an off-color crystalline compound? A.…
A: Introduction: Purification is the process of obtaining pure compounds by removing unwanted…
Q: A 2.0 g of MgCO3 was dissolved and diluted to exactly 500-mL volumetric flask. If 50-mL aliquot was…
A: Mass of MgCO3 = 2g Mol. Mass of MgCO3 = 84g/mol Volume of dilution = 500ml Volume of aliquot = 50ml…
Q: Write the mass balance equation for a water solution saturated with CaF2 (Ksp =9 × 10−11) without…
A: mass balance equation for a water solution saturated with CaF2 required reactions are: CaF2…
Q: What is the minimum distribution constant that permits removal of 99% of a solute from 50.0 mL of…
A: Solution - According to the question - Given - It is given that 99% of given solute is removed from…
Q: Why is an aqueous solution of NaCl used to prepare the solutions for runs 2-4 instead of deionized…
A: Deionized water contains no ions in it where as the sodium chloride solution having sodium(Na+) ion…
Q: Explain why it is incorrect to collect data for temperatures above 100 C in terms of the solute to…
A: A question based on calibration method that is to be accomplished.
Q: Consider the reaction of a 20.0 mL of 0.220 M CSH§NHCI (Ka = 5.9 x 10-6) with 12.0 mL of 0.241 M…
A: Given: Volume of C5H5NHCl = 20.0 mL Molarity of C5H5NHCl = 0.220 M Volume of CsOH = 12.0 mL…
Q: A student will use a solution containing the complex (which has a molar absorptivity of 9.32 X 103…
A: To determine the concentration of complex, student multiplied molar absorptivity with MM of…
Q: What are desirable properties of a gravimetric precipitate?
A: The most favored properties of gravimetric precipitate are as follows,
Q: A pain reliever is soluble in cold water to the extent of 1.0g/1310 mL and soluble in diethylether…
A: Formula : Distribution coefficient= (solubility in organic) ÷ (solubility in aqueous) Moles of H2O =…
Q: in a chromatographic analysis of water from a drinking fountain gives area of 1.56*10^4, 5.12*10^4,…
A: In the given problem from the cromatographic analysis of water we need to determine the…
Q: What is the minimum distribution ratio (Dc) if 98% of the solute in a 25.0-mL sample in an aqueous…
A:
Q: Write a flow chart for the separation and identification of Ag+, Bi3+, and Ni2+
A: Group I : Ag+ Group II A : Bi3+ Group III B : Ni2+
Q: The distribution constant, Kp, for compound A between toluene and water is 9.65. What is the…
A:
Q: Which statement about the determination of the percentage purity of benzoic acid is correct? *…
A: We have given statements , we have to choose correct statement
Q: Objective: To determine the percent NaCl (w/v) of a water sample 5.00 mL sample diluted to 50 mL…
A: Balanced chemical equation: NaCl (aq) + AgNO3 (aq) ------> NaNO3 (aq) + AgCl (s) From the…
Q: Describe the preparation of 2.00 L of 0.1500M HCl from primary-standard grade NaCl using a…
A: GIven : Molarity of HCl : 0.1500M Volume of solution: 2.00L Molar mass of NaCl: 58.44 g/mol
Q: Objective: To determine the percent NaCl (w/v) of a water sample 5.00 mL sample diluted to 50 mL…
A: The question is based on the concept of quantitative estimation. we have to calculate percentage…
Q: Analyze and calculate the percentage of nickel in a 1.201 grams sample of nickel ore which was…
A: Ni2+(aq) reacts with CN-(aq) through the reaction below: Ni2+(aq) + 4CN-(aq) (Excess) ---->…
Q: In chromatography, the compound that is least soluble in the mobile phase a) Travels the furthest…
A: When a compound is dissolved in the mobile phase it is carried along the direction of flow, but when…
Q: The pNa of a mixture prepared by mixing 200 ml of 0.00063 Mof NaCl and 300 ml of 0.00040 M in Na3PO4…
A: Molarity is one of the concentration term which is used to define the concentration of a solute in a…
Q: NaCl equivalent of a 1% solution of pilocarpine nitrate
A: In this question we have to calculate NaCl equivalent of 1% solution of pilocarpine nitrate. Also we…
Q: (c) What is the minimum distribution ratio that permits removal of 99% of a solute from 50.0 mL of…
A:
Q: Calculate the concentration of stock tetraoxosulphate 6 acid which has mass density of 2.50 and has…
A: In the given question we have to calculate the stock concentration of Tetraoxosulphate(VI).
Q: Write a mass balance for K+ in a solution prepared by mixing 0.025 mol KH2PO4 plus 0.030 mol KOH…
A: Given: A solution prepared by mixing 0.025 mol KH2PO4 plus 0.030 mol KOH and diluting to 1.00 L
Q: Consider the reaction of a 20.0 mL of 0.220 M CSH;NHCI (Ka = 5.9 x 10-6) with 12.0 %3D mL of 0.241 M…
A: Number of moles is equal to the ratio of mass to molar mass of substance. Number of moles=MassMolar…
Write the mass balance for Mg2 for 0.20 M MgBr2.
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- A student has 500.0 mL of a 5.75 x 10 M ZNC204 solution. Sufficient Na2C204 is added to maintain the [C20,2] = 6.00 x 102 M. Determine the % (in moles) of Zn2+ remaining in solution. Ksp (ZnC204) = 2.7 x 108 Express the answer to 3 sig. figs.Discuss the general steps in gravimetric analysis.Determine the solubility of Ag2SO3 (Ksp=1.5x10-14; MW=295.8 g/mole) in a 0.2 M solution of Na2SO3.
- 4. If the following values are used... Measure the mass of 0.400 g of cobalt(II) nitrate hexahydrate (Co(NO;)2 -6H2O), and dissolve it in 15.0 mL of distilled or deionized water using a clean beaker. Using a graduated cylinder, measure out 10.0 mL of a prepared 0.10-M sodium phosphate (NazPO4) solution. ... determine which compound, (Na3PO4 or Co(N03)2 ·6H2O) will be the limiting reagent. Then determine the theoretical yield.Caustic potash that has been exposed to air is found on analysis to contain 90.00% KOH, 2.38% K2CO3 and 7.62% H2O. What weight of residue will be obtained if 1.00 g of this sample is added to 46.00 mL of 1.00 N HCl and the resulting solution, after neutralization with 1.070N KOH is evaporated to dryness?The Kjeldahl method was used to determine the nitrogen content of a protein. A 275 µL aliquot of a 47.0 mg/mL protein solution was digested in boiling sulfuric acid. The solution was made basic and the liberated NH, was collected in 5.00 mL of 0.0512 M HCl. A volume of 7.00 mL of 0.0174 M NaOH was required to react with the excess HCl. Calculate the weight percent of nitrogen in the protein. weight percent: wt% N
- A sample of 6 M 10 mL H2SO4 is diluted to 100 ml. Calculate the concentration ( in gravimetric analysis )0.1745 g of primary standard Na2C2O4 is used to set a freshly prepared KMnO4 solution and 30.24 mL of KMnO4 solution is spent at the turning point. Since 36.92 mL of this KMnO4 solution is consumed for the determination of iron in 0.5618 g ore sample, calculate the amount of iron in the ore in terms of % iron (III) oxide and % iron (III) chloride. (Fe: 56, K: 39, Mn: 55, O: 16, Na:23, C: 12, Cl: 35.5 g/mol) (Please type answer)Write a mass balance for a solution of Fe2(SO4)3 if the species are Fe3, Fe(OH)2, Fe(OH)2, FeSO4, SO24, and HSO4.
- 148. Addition of 50.00 mL of 2.238 m H2SO4 (solution density = 1.1243 g/mL) to 50.00 mL of 2.238 M BaCl2 gives a white precipitate. (a) What is the mass of the precipitate in grams? (b) If you filter the mixture and add more H2SO4 solution to the filtrate, would you obtain more precipitate? Explain.Write a balanced equilibrium equation for the dissolution of NaI in water. Include phases.Percentage purity of a sample of 0.1350 g of As2O3 assayed iodometrically using 23.5 mL of 0.1055N iodine solution