he presence of soluble chromium compounds in wastewater is of great environmental concern. As part of an investigation to remove the metal, a laboratory technician adds 150.00 mL of 1.75 M Cr(NO3)3 to 70.00 mL of 1.41 M K2S, resulting in a precipitate of Cr2S3. The concentrations of Cr3+ in solution after the reaction is completed is

Q: 2 NaCl(aq)+Ba(OH), (aq) BACL, + 2 N2OH Identify the precipitate, or lack thereof, for the reaction.…

A:

Q: 1. A sample containing magnetite, Fe;O4, was analyzed by dissolving a 1.5419-g sample in…

A: Amount of Ore obtained Fe=0.8525g Reaction involved  Fe3O4 + 8HCl ----------   Fe+2+2Fe+3 4Fe3O4  +…

Q: In the preparation of Rochelle salt (MW = 282.83 g/mol), 6.6 grams of monohydrated Sodium carbonate…

A:

Q: 16.792 g of Ba(OH)2 (171.342 g.mol-1) is weighed out and carefully dissolved to make a 500.00cm3…

A:

Q: Write the balanced COMPLETE ionic equation for the reaction when aqueous NiCl₂ and aqueous Na₂S are…

A: The reactants given are, 1) NiCl2 (aq) 2) Na2S (aq)  And the products forming are, 1) NiS (s) 2)…

Q: How many grams of Ag2CO3 will precipitate when excess K2CO3 solution is added to 49.0 mL of 0.598 M…

A: Given;

Q: When aqueous solutions of K₂SO4 and CrCl3 NiBr2 and AgNO3 Li₂CO3 and Csl O Nal and KBr O KOH and…

A: In a double displacement reaction if one of the product is soluble and another is insoluble then…

Q: How many grams of PbBr2 will precipitate when excess BaBr2  solution is added to 78.0 ml of 0.524 M…

A: Recall the reaction that will occur here PbNO32 + BaBr2 →PbBr2 + BaNO32 Given that 78.0 ml of 0.524…

Q: Write the balanced NET ionic equation for the reaction when aqueous BaCl and aqueous (NHa)2SOa are…

A: Balanced molecular equation for aqueous BaCl2 and aqueous (NH4)2SO4 to give aqueous NH4Cl and solid…

Q: In the preparation of Rochelle salt (MW = 282.83 g/mol), 6.3 grams of monohydrated Sodium carbonate…

A: Monohydrate sodium carbonate (CH2Na2O4) = 6.3 g  Potassium bitartrate (C4H5KO6) = 20 g  Rochelle…

Q: O A chemical engineer determines the mass percent of iron in an ore sample by converting Fe to Fe in…

A: The balanced reaction taking place is given as, Given : Concentration of KMnO4 = 0.03190 M Volume…

Q: A 0.5382 g sample containing sodium bicarbonate was dissolved and titrated with standard 0.1263 M…

A: Here acid base neutralization reaction will takes place in which one equivalent of HCl required for…

Q: How many grams of Ag,CO3 will precipitate when excess (NH4)½CO3 solution is added to 57.0 mL of…

A: Given  Molarity of AgNO3  =  0.561 M                                  = 0.561 mol/L  Volume = 57  mL…

Q: write the balanced complete ionic equation for the reaction when aqueous NiCl2 and aqueous Na2S are…

A: Interpretation: The balanced complete ionic equation for the reaction when aqueous NiCl2 and aqueous…

Q: A student wishes to determine  the mass percentage of barium in a 2.016g  sample. The student…

A: Given : Molarity of H2SO4 = 0.20M Volume of H2SO4 = 20mL

Q: A 35 mL of a Na3PO4 aqueous solution and 35mL of a BaCl2 aqueous solution were combined to form…

A: Consider the given information is as follows; Mass of Ba3PO42 = 0.520 g Volume of BaCl2 = 35 mL =…

Q: Vinegar contains acetic acid (HC2H3O2), which is responsible for its acidity. In one analysis of a…

A:

Q: Write the balanced NET ionic equation for the reaction when aqueous CS3PO4 and aqueous AGNO3 are…

A: Write the balanced chemical equation. Write state for each substance Split strong electrolytes into…

Q: Fe(ll) can be precipitated from a slightly basic aqueous solution by bubbling oxygen through the…

A:

Q: The concentration of SO42– ions in a 45.0 mL sample of seawater is determined by adding a solution…

A: Given information: Mass of barium sulfate = 0.315 g Volume of sample = 45.0 mL or 0.045 L

Q: A 1.00 g mixture of H2O and D2O was electrolyzed producing H2(g), D2(g) and O2(g).  The H2(g) and…

A: The reactions involved are: Cl2+H2O⇒HOCl + HClCl2+D2O⇒DOCl + DCl

Q: To determine the amount of iron in a dietary supplement, a random sample of 15 tablets weighing a…

A: Given that  Mass of Fe2O3 = 0.355g  Molar mass of Fe2O3 = 159.69 kj/mol

Q: Explain why the solid precipitate Agl (s) forms when solutions of KCl (aq) and AgNO3 (aq) are mixed

A: The ionic compounds dissociate completely into ions in an aqueous solution. The oppositely charged…

Q: Excess Na2SO4(aq) is added to a 2.43×102 mL sample of industrial waste containing Ba2+ ions. If 20.5…

A: Total industrial sample = 2.43 x 102 mLTotal mass of BaSO4 precipitated= 20.5gThe given reaction is

Q: When 6.881 g of MgCl2 and NaCl mixture is dissolved in 500 mL of distilled water and 50 mL of AgNO3…

A: step: 1 of 8 In a given problem,  contains, therefore,  is produced by. Thus, the moles of  can be…

Q: Write the balanced NET ionic equation for the reaction when aqueous BaCl2 and aqueous (NH4)2S04 are…

A: Given reaction,     BaCl2(aq) + (NH4)2SO4(aq)  →  NH4Cl(aq) + BaSO4(s)

Q: What volume of 0.416 M mg(no3)2 should be added to 255ml of 0.102M KNO3 to produce a solution with a…

A: Given, Concentration of Mg(NO3)2 = 0.416M. Volume of KNO3 = 255mL. Concentration of KNO3 = 0.102M.…

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

A: Theoritically :- 1 mole CaCO3 is giving 1 mole of Ca., n(Ca) = n(CaCO3) Moles of CaCO3 = mass of…

Q: The presence of soluble chromium compounds in wastewater is of great environmental concern. As part…

A: Given : Concentration of Cr(NO3)3 = 1.75 M Volume of Cr(NO3)3 solution = 150.0 mL = 0.150 L…

Q: When aqueous FeCL3 is combined with 100.00 mL of  a base solution containing Ba(OH)2, 0.567g of…

A:

Q: 2) ) A student who wants to make the determination of calcium, and he dissolved impure 0.1453 g…

A:

Q: 16.792 g of Ba(OH)2 (171.342 g.mol-1) is weighed out and carefully dissolved to make a 500.00cm3…

A:

Q: 252 mL of 3.00 M H2SO4(aq) are added to 1.50 L of 0.500 M H2SO4(aq). What is the concentration of…

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

Q: A solution of sodium hydroxide is standardized against potassium hydrogen phthalate (molecular mass…

A: Given, Mass of KHP =0.7840 g Initial reading of burette=0.8400 mL Final reading of burette = 39.20…

Q: 6. A 0.4622-g sample of potassium hyd rogen phthalate was dissolved in 50 mL of deionized water and…

A: The molarity of a solution is the ratio of number of moles of a substance to the volume of solution…

Q: Excess Na2SO4(aq) is added to a 4.41×102 mL sample of industrial waste containing Ba2+ ions. If 55.5…

A: Molarity is a term used for concentration which shows the moles of solute dissolved per liters of…

Q: Fe(I) can be precipitated from a slightly basic aqueous solution by bubbling oxygen through the…

A: Consider the given balanced reaction as; Reaction:      4 FeOH+ aq + 4 OH- aq + O2 g + 2 H2O l → 4…

Q: Write the complete, balanced reaction that occurs when manganese (II) nitrate is mixed with sodium…

A:

Q: 16.792 g of Ba(OH)2 (171.342 g.mol-1) is weighed out and carefully dissolved to make a 500.00cm3…

A:

Q: Consider a 1.00 g sample containing 75% potassium sulfate (MW=174.25 g/mol) and 25%  MSO4. The…

A: The molar masses are -  K2SO4=174.26 g/molBaSO4=233.4 g/mol

Q: Calculate the total mass, in grams, of precipitate produced when 10.0 mL of 2.50 M SrS (aq) reacts…

A: The volume of SrS = 10 mL or 0.01 L Molarity of SrS = 2.50 M

Q: McQuarrie • Rock Galloyly A 0.3146 g sample of a mixture of NaCI(s) and KBr(s) was dissolved in…

A: It is given that 0.3146 g of a mixture of NaCl and KBr is dissolved in water, and 37.4 mL of 0.08765…

Q: Jack was asked to determine iron (55.845 g/mol) content in dietary supplement. He took few random…

A: The question is based on the concept of quantitative analysis. We will determine percentage iron…

Q: Consider the following chemical reaction. 3 Zn(C,H,O,),(aq) + 2 Na PO,(aq) → 6 NaC,H,O,(aq) +…

A:

Q: The balanced equation for the reaction of aqueous Pb(ClO,), with aqueous NaI is Pb(CIO,),(aq) + 2…

A: Given: Pb(ClO3)2 (aq) + 2 NaI (aq) ------> PbI2 (s) + 2 NaClO3 (aq) Volume of Pb(ClO3)2 = 1.50 L…

Q: 1. A sample containing magnetite, Fe;O4, was analyzed by dissolving a 1.5419-g sample in…

A: A numerical problem based on isolation of metals, which is to be accomplished.

Q: When concentrated CaCl2 (aq) is added to NazHPO, (aq), a white precipitate forms that is 38.7% Ca by…

A: 1. During a chemical reaction,  if two ions, having different reactivity exchanges there position…