A student weighs out 1.215 g of an impure KHP, dissolves the sample in 100. mL DI water and titrates it with 0.120  M NaOH solution. If the titration requires 31.5 mL of the NaOH solution, and none of the impurities react with NaOH, what is the percent KHP in the sample ?  KHP = KHC8H4O4 Atomic masses : K = 39.1, H =1.00, C =12.0, O =16.0 g/mol, respectively.

Q: A 25.0 mL solution of 1.00 M CaCl2 is diluted to 250.0 mL. Then, 30.0- mL aliquot of the diluted…

A:

Q: Calcium oxalate, CaCO4, is very insoluble in water. What mass of sodium oxalate,Na2C2O4, is required…

A: Given: Volume of CaCl2 = 37.5 ml Molarity of CaCl2 = 0.104M

Q: The Student is required to determine the concentration of a basic NaOH by using the primary standard…

A: KHP , also called as Potassium Hydrogen Phthalate is a salt which is acidic in nature. It is a mono…

Q: An aqueous sample of 25.0 mL H2SO4 is neutralized by the addition of 28.9 mL of 0.203 M KOH.  What…

A: The neutralisation reaction taking place will be 2 KOH + H2SO4 ------> K2SO4 + 2 H2O

Q: 25 mL of a bleach (NaOCl) sample is diluted to 500 mL. An excessive amount of KI is added to the 20…

A: The question is based on the concept of quantitative analysis . we have to calculate percentage of…

Q: A 185.0 mL sample of 1.200 M Pb(NO₃)₂ is mixed with 99.50 mL of 1.500 M NaCl, and the PbCl₂…

A: The balanced chemical equation for the precipitation of lead (II) chloride can be written as:…

Q: A solution of citric acid (H3CgH;O,) with a known concentration of 0.200 M H;C,H;O, is titrated with…

A: Given,Concentration of citric acid = 0.200 MVolume of Citric Acid = 25 mLMoles of citric acid =…

Q: What mass of NaCrO4 is required to precipitate all of the silver ions from 75.0 mL of a 0.100 M…

A: NOTE: please note that molecular formula of sodium chromate indicated is wrong. I have used the…

Q: What is the molar concentration of Cl– in a solution prepared by diluting 12.5 mL of a 0.100 M…

A: Molar concentration of Cl-

Q: A sample of solid calcium hydroxide, Ca(OH)2, is allowed to stand in water until a saturated…

A: A saturated solution of solid calcium hydroxide, Ca(OH)2, is made by dissolving in enough water. Now…

Q: which of the following substances is commonly used to reduce soil acidity? Ammonium sulphate Sodium…

A: a) For reducing the acidity of the soil, we need a basic substance. Of the given options, only…

Q: A 185.0 mL sample of 1.200M Pb(NO3)2 is mixed with 139.50 mL of 1.500 M NaCl, and the PbCl2…

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Q: In a titration reaction 20.00mL of 0.500M KOH reacts completely with 12.55 mL of sulfuric acid, what…

A: Molecular reaction between KOH and H2SO4 . 2KOH(aq)+H2SO4(aq)→K2SO4(aq)+2H2O (l) From this reaction…

Q: 2. Suppose a titration needed 27.15 mL of 0.2497M HCI solution to completely react 25.00mL Ba(OH)2…

A: The number of moles of a substance is determined as the mass of a substance upon its molar mass. The…

Q: The company gave Phereseadula, who is an analyst, 5.00 L of H3PO4 and he was required to calculate…

A: Solution: Here H3PO4 is triprotic acid which is titrated again monobasic NaOH. So the titration…

Q: A 185.0 mL sample of 1.200 M Pb(NO₃)₂ is mixed with 119.50 mL of 1.500 M NaCl, and the PbCl₂…

A: The balanced Chemical Reaction for less Nitrate and sodium chloride is - Pb(NO₃)₂  + 2NaCl ---->…

Q: Suppose that 0.3562 g of Na:C:04 is dissolved in a 250.0-mL volumetric flask. If 10.00 ml of this…

A: Given,

Q: A student weighs out 1.051 g of impure KHP, dissolves the sample in deionized water and titrates it…

A: Given data Mass of impure KHP = 1.051 g Molarity of NaOH  solution = 0.1101 M Volume of NaOH…

Q: An impure sample of barium hydroxide of mass 1.6524g was allowed to react with 100mL of 0.200M…

A: Molar mass of Ba(OH)2= 171.34 g/mol Mass of impure sample of Ba(OH)2=1.6524g Volume of HCl=100ml…

Q: You have a solution of 1M BaCl2 and another of 1M Hg2(NO3)2. If you poured them together, what…

A: 1. In double displacement reaction,  cation of one species easily replaces cation of another species…

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

A:

Q: Does a precipitate form if you add 20.00 mL of a 6. 97x10-5 mol/L solution of lead (II) nitrate,…

A: Given,  Molarity of Pb(NO3)2 = 6.97 x 10-5 mole/L  Volume of Pb(NO3)2 in mL = 20.00 mL  Molarity of…

Q: A careless student forgets to label one of their reagent containers. They know it contains one of…

A: The given solution may be one of the following: 0.1 M NaCl0.1 M CaNO320.1 M KCH3COO

Q: What volume (mL) of 0.0.214 M (NH4)2HPO4 is necessary to precipitate the calcium as Ca3(PO4)2 from…

A:

Q: What mass of Na2  CrO4 is required to precipitate all of the silver ions from 45.0 mL of a 0.600 M…

A:

Q: A 25.00 mL sample of acetic acid (CH3COOH) is titrated to the equivalence using 31.08 mL of 0.1978 M…

A:

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

A: The chemical reaction between Na2CO3 and Mg(NO3)2 is shown below.

Q: How many grams of Cu(OH)2 will precipitate when excess Ba(OH)2 solution is added to 45.0 mL of 0.778…

A: Given reaction:-  CuCl2(aq) + Ba(OH)2(aq) -----> Cu(OH)2(s) + BaCl2(aq) Molarity of CuCl2 = 0.778…

Q: A solution contains 0.0480 M Ca²+ and 0.0990 M Ag*. If solid Na;PO4 is added to this mixture, which…

A: Given information: Concentration of calcium ions = 0.0480 M Concentration of silver ions = 0.0990 M

Q: A 5.00 ml sample of vinegar was titrated with 0.08751 M N2OH. The sample requires 22.31 mL of NAOH…

A: The reaction between acetic acid and NaOH is given as:CH3COOH (aq) + NaOH (aq) → H2O (l) + CH3COONa…

Q: What is the cobalt(II) ion concentration in a solution prepared by mixing 351 mL of 0.372 M…

A:

Q: The solubility of magnesium flourish in water is 1.5*10-2 g/L. What is the solubility in grams per…

A:

Q: A 185.0 mL sample of 1.200 M Pb(NO3)2 is mixed with 123.50 mL of 1.500 M NaCI, and the PbCl2…

A: Molarity of Pb(NO3)2 = 1.200 M  Volume of of Pb(NO3)2 =  185.0 mL = ( 185.0 / 1000 ) L = 0.185 L…

Q: A sample of solid Mg(OH)2 was stirred in water at a certain temperature until the solution contained…

A: HClO4 is a strong acid, it reacts with magnesium hydroxide Mg(OH)2 , this is an acid base reaction.…

Q: A solution is prepared by pipetting 25.0 mL of 0.350 M CuCl2 into a 100.0 mL volumetric flask,…

A: Concentration in terms of molarity is defined as the moles of solute present per litre of the…

Q: A solution contains 0.0490 M Ca²+ and 0.0920 M Ag*. If solid Na3PO4 is added to this mixture, which…

A: When sodium phosphate is added to a solution containing Ca2+ and Ag+ ions, some amounts of calcium…

Q: A K2SO4•Al2(SO4)3•24H2O preparation is tested for its purity by converting first to Al(OH)3 then…

A: The answer and explanation is as given below:

Q: A 25.00 mL sample of a vinegar solution is diluted to 250.00 mL with water. Then a 25.00 mL aliquot…

A: Molarity of NaOH = 0.1027 M Volume of NaOH = 22.13 mL Volume of Vinergar = 25 mL

Q: You mix 275.0 mL of 1.20 M Pb(NO3)2 with 300.0 mL of 1.85 M KI. Calculate the mass of precipitate.

A: Given data : Concentration of Pb(NO3)2 = 1.20 M Volume of Pb(NO3)2 = 275 mL Concentration of KI =…

Q: In a double replacement precipitation reaction, KCl reacts with Pb(NO3)2 in a 2:1 mole ratio,…

A: Potassium chloride reacts with lead (II) nitrate to form potassium nitrate and lead (II) chloride.…

Q: A sample of solid Ca(OH)2 was stirred in water at a certain temperature until the solution contained…

A:

Q: Suppose that 42.00 mL of 0.150 M NaOH is added to 0.360 g of a weak acid, H3A.  The excess NaOH is…

A: Millimol = Molarity×Volume(in ml) = mass(in mg)÷molar mass

Q: A 185.0 mL sample of 1.200 M Pb(NO₃)₂ is mixed with 97.50 mL of 1.500 M NaCl, and the PbCl₂…

A: Given, A 185.0 mL sample of 1.200 M Pb(NO₃)₂ is mixed with 97.50 mL of 1.500 M NaCl, and the PbCl₂…

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

A:

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

A:

Q: What molarity of Ag+ ions is required for the formation of a precipitate in 1.0 × 10-5 M NaCl(aq)?

A: Since NaCl is a strong electrolyte. hence it will dissolve completely in solution as per the…

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

A: The following reaction is occurring: Determine the moles of Na2CO3 present in the reaction as shown…

Q: Calcium oxalate is very insoluble in water.  What mass of sodium oxalate is required to precipitate…

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: An aqueous solution of barium nitrate is combined with an aqueous solution ốf sodium carbonate and a…

A: Given : HCl is added to the precipitate in b i.e barium carbonate i.e BaCO3.