in an experiment, 4.0 g of an impure nacl salt sample is dissolved in water and treated with excess agno3, resulting in 7.55 g of agcl precipitate. by gravimetric analysis, you can determine the level of impurity of the salt sample. a. what is the percentage (by weight) of nacl in the impure sample? b. what is the percentage (by weight) of chloride (cl-) in the impure sample?

Q: MGNH&PO4-6H2O has a solubility in water of 0.023 g/100mL. Suppose a student obtains 0.7193 g of…

A: Solution:- Given the solubility of MgNH4PO4.6H2O is 0.023 g/100 mL  Mass of precipitate = 0.7193 g…

Q: When 38.0 mL of 0.1250 M H2SO4 is added to 100. mL of a solution of Pb(NO3)2, a precipitate of PbS04…

A: Given: Volume of H2SO4 = 38.0 mL Concentration of H2SO4 = 0.1250 M Volume of Pb(NO3)2 = 100.0 mL…

Q: A5.85% (w/w) Fe(NO. )g (241.86 g/ mol) solution has a density of 1.059 g/mL. Calculate 1, the molar…

A:

Q: 2.55 g sample of a sample containing KHP and NaCl is titrated with a 0.213 M NaOH solution.  It is…

A: KHP is potassium hydrogen phthalate = KHC8H4O4 Neutralization Reaction of KHP with NaOH  KHP + NaOH…

Q: A solution of 118mL of 0.180 M KOH is mixed with a solution of 260mL of 0.190M NiSO4. = 2KOH(aq) +…

A: As per our guidelines we can only solve first three sub-parts of a question. Please resubmit the…

Q: Addition of an excess silver nitrate to a 0.5012 g sample yielded a mixture of AgCl and Agl that…

A: Excess silver nitrate was added to a mixture containing NH4I and NH4Cl.…

Q: The concentration of a potassium permanganate (KMNO4) solution is determined by titration with…

A:

Q: Mass of H2C2O4•2H2O = 1.3245 grams  Molar Mass of H2C2O4•2H2O = 126.07 Volume of H2C2O4•2H2O…

A:

Q: 325 mL of 0.100 M CaCl2 solution is treated with 0.150 M AgNO3 solution until precipitation is…

A:

Q: A 1.0 g sample of a substance of unknown molar mass requires 40 ml of standard solution for…

A:

Q: 4) A 50 mL sample taken from a vinegar sample was diluted to 500 mL with distilled water. The 25.0…

A:

Q: Silver can be precipitated from a solution by adding Cl- ionsto form AgCl. How many grams KCl must…

A: To find the mass of KCl that must be added to precipitate 1.77 g of Ag.

Q: engine.html?ClassID=1746475745# Orie. 3.08 x 10-3 mol FeCl3 was identified through titration from…

A:

Q: A 55.5mL sample of 0.104M potassium sulfate solution is mixed with 35.5mL of a 0.104M lead(II)…

A: Interpretation: From the given information theoretical yield of PbSO4 in grams is to be determined.…

Q: A 0.5g sample of Silver nitrate was dissolved in 350 ml water was mixed with 0.25g potassium bromate…

A: Interpretation -  When A 0.5g sample of Silver nitrate was dissolved in 350 ml water was mixed with…

Q: (??(?? ) ) to 0.5 M solution of potassium chromate (? ??? ). 1.What observations indicate that a…

A: 1. Formation of a precipitate indicates that a chemical reaction has occurred. 2. Pb(NO3)2 (aq) +…

Q: To determine the amount of magnetite, Fe3O4, in an impure ore, a 1.5419-g sample is dissolved in…

A:

Q: Part B: Sulfate. A 1.109 g sample of a material known to contain sulfate is dissolved and the…

A: A sample containing sulfate ion is precipitated with Pb(II) ions as PbSO4.The weight of the…

Q: Fe in ore can be analyzed by oxidizing Fe to Fe2+ then titrating  Fe2+with K2Cr2O7  .  See equation…

A: Stoichiometry of  Analyte  Titrant

Q: A sample contains MgCl2 (95.211 g/mol) and KCl (74.551 g/mol). A 6.3674-g sample was dissolved in…

A: Precipitation refers to formation of product as solid mass that settles at the bottom. Such…

Q: Consider the reaction between ammonium dichromate and iron (III) acetate which occurs by the…

A: Molarity is the unit of concentration of a solution, and its unit is mol/L. It is defined by the…

Q: An aspirin sample, 0.62 grams, was titrated with 28 mL of 0.105 M NaOH solution. What is the percent…

A: 1 mol of NaOH react with 1 mol of aspirin. Given amount of aspirin = 0.62 g (Theoretical amount)  28…

Q: 5. A 0.331 g sample of aspirin prepared in the laboratory was dissolved in 95% ethanol and titrated…

A: a) The number of moles is calculated as, 0.107 M NaOH = mol/ 0.0167 Lmol= 0.107 mol/L x 0.0167 L =…

Q: Sulfate Determination by precipitation a. A generic equation is shown below where x and y represent…

A: A balanced chemical reaction is said to be balanced when number of atoms on reactant side should be…

Q: An impure sample of sodium sulfate was dissolved in deionized water and titrated with 0.281 M barium…

A: Given that molarity of barium chloride = 0.281 M  Volume of barium chloride = 0.03465 L

Q: We have a blue colored solution of CuSO4 in a concentration of 0.1 M. What is the necessary…

A: Since initial moles of Cu2+ taken = moles of CuSO4 = concentration of CuSO4 X volume of solution =…

Q: Samples containing oxalate ion can be titrated with solutions containing permanganate ion under…

A: From the given reaction we can see that, 2 moles of KMnO4 ( or MnO4-) will react with 5 moles of…

Q: A 12.63 g sample of calcium ore was dissolved in HCl and gravimetrically analyzed, through the…

A: Solution - According to the question - Given - Mass of calcium ore = 12.63 g Mass of pure CaCO3 =…

Q: Calcium oxalate is a sparingly soluble ionic compound composed of calcium ions (Ca2+) and oxalate…

A:

Q: A 6.07-g sample containing magnesium chloride (95.211 g/mol) and sodium chloride (58.44 g/mol) was…

A: Given the mass of Mg2P2O7(s) formed after complete ignition of the precipitate = 0.5412  Molar mass…

Q: What mass of the precipitate  is produced in the reaction of  15.0 ml of 0.150 M  Na3PO4     and…

A:

Q: A sample contains MgCl2 (95.211 g/mol) and KCl (74.551 g/mol). A 6.6933-g sample was dissolved in…

A: Mass of sample = 6.6933 g The sample contains KCl and MgCl2 which will furnish Cl- in the solution.…

Q: A solution of NaCl(aq) is added slowly to a solution of lead nitrate, Pb(NO3)2(aq), until no further…

A: The reaction of NaCl and Pb(NO3)2 – 2NaCl + PbNO32 →PbCl2 s+ 2NaNO3

Q: Question attached

A: The balanced equation for the reaction between KHP and NaOH is: C8H5KO4 + NaOH → C8H4KO4-Na+ + H2O

Q: a) A chemical formula that precipitates with both KCl and CuCl2? b) A chemical formula that…

A:

Q: The alcohol content in a 10.0 g sample of blood from a driver required 4.23 mL of 0.07654 M K2Cr2O7…

A: The volume of K2Cr2O7 = 4.23 mL                                       = 4.23×10-3 L Molarity of…

Q: 2) What does precipitation mean? a) Aggregation of the precipitated molecules as powder. b)…

A: What does precipitation mean has to be given.

Q: A sample contains MgCl2 (95.211 g/mol) and KCl (74.551 g/mol). A 6.3674-g sample was dissolved in…

A: Molar mass of MgCl2 = 95.211 gmol Molar mass of KCl = 74.551 gmol Mass of sample = 6.3674 g Volume…

Q: A stock solution containing Mn2+ ions was prepared by dissolving 1.584 g pure manganese metal in…

A: Given that, Mass of Mn= 1.584 g Volume of stock solution = 1.00 L Now, 10.00 mL of this stock…

Q: How many grams of PbBr2 will precipitate when excess MnBr2 solution is added to 46.0 mL of 0.692 M…

A: The given reaction is shown below: Pb(NO3)2(aq) + MnBr2(aq) --------> PbBr2(s) + Mn(NO3)2(aq)

Q: Many chemical compounds contain impurities. Crude potassium carbonate (K2CO3) obtained from the…

A:

Q: To determine the amount of magnetite, Fe3O4, in an impure ore, a 1.5419 g sample is dissolved in…

A:

Q: Calculate the mass of MgCO3 precipitated by mixing 10.00 mL of a 0.200 M Na2CO3 solution with 5.00…

A: Given: Volume of Na2CO3     = 10.00 mL Molarity of Na2CO3    = 0.200 M Volume of Mg(NO3)2  = 5.00 mL…

Q: In one experiment, 0.2480 g sample of CaCO3 was dissolved in an acidic solution. The calcium was…

A: Given data,Mass of sample=0.2480gMass of CaC2O4.H2O=0.3084g

Q: If 20 mL of 0.5 M Pb(NO3)2 solution is added into 40 mL 0.5 M KI solution, how many grams of Pbl2…

A:

Q: You performed a titration to determine the concentration of a solution of NaOH using solid KHP…

A: Molarity of a solution is equal to the number of moles of solute divided by volume of solution.…

Q: What mass of solid AgCl will precipitate from a solution containing 1.50g CaCl2 with AgNO3 in…

A: