Calculate the number of milliliter of ammonia whose density is 0.99 g/ml, 2.3% by weight NH3 which will be required to precipitate the iron as Fe(OH), in a 0.74g sample that contains 22% FeO, RXN2NH3 + Fe+³ Fe(OH)3 + 3NH₂ +3 Rxn: 3 NH3 + Fe → Fe (OH)₂ + 3 NH ₂ T
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- A solution contains 8.61x10-3 M calcium nitrate and 8.96x10-3 M chromium(III) acetate. Solid ammonium phosphate is added slowly to this mixture. What is the concentration of chromium(III) ion when calcium ion begins to precipitate? [Cr³+] Submit Answer M Retry Entire Group 8 more group attempts remaining A solution contains 1.02x10-2 M zinc nitrate and 1.21x10-2 M silver acetate. Solid potassium cyanide is added slowly to this mixture. What is the concentration of silver ion when zinc ion begins to precipitate? [Ag+] = Mtry 2 (Worksheet) 4 0 Practice Problems Open with 11. If 8.5 g of pure ammonium phosphate, (NH₂),PO (s), is dissolved in distilled water to make 400 mL of solution, what are the concentrations (in moles per litre) of the ions in the solution? 12. A strip of zinc metal was placed in a beaker that contained 120 mL of a solution of copper(II) nitrate, Cu(NO3)2(aq). The mass of the copper produced was 0.813 g. Find the initial concentration of the solution of copper(II) nitrate. 13. When 75.0 mL of silver nitrate, AgNO₂(aq), was treated with excess ammonium carbonate, (NH4)2CO3(aq), 2.47 g of dry precipitate was recovered. Write the net ionic equation for the reaction, and calculate the concentration of the original silver nitrate solution. 14. When an excess of sodium sulfide, Na,S(aq), was added to 125 mL of 0.100 mol/L iron(II) nitrate, Fe(NO3)₂(aq), a black precipitate formed. Identify the precipitate, and calculate the maximum mass of precipitate that can be collected from the…A solution contains 7.15×10 3 M silver acetate and 8.54x103 M nickel(II) nitrate. Solid potassium cyanide is added slowly to this mixture. What is the concentration of silver ion when nickel ion begins to precipitate? [Ag+] = M %3D Submit Answer Retry Entire Group 8 more group attempts remaining
- (Incorrect) 51 mL of 0.060 M NaF is mixed with 17 mL of 0.15 M Sr(NO3)2. Calculate the concentration of F in the final solution. Assume volumes can be added. (Ksp for SrF₂ = 2.0×10-10) 0.0075 M (Your answer) 0.00012 M (Correct answer) 0.038 M 0.045 M 0.015 Ml Verizon ? 4:05 PM 75% Question 3 of 7 Submit Which of the following is the correct equilibrium equation for the solubility equilibrium of La(1O3);? A) La(IO3)3 (aq)= La* (aq) + 3 103 (aq) B) La3* (aq) + I0," (aq) = La(1O3)3 (s) C) La(IO3)3 (aq) La* (aq) + (1O3),³- (aq) D) La(IO3)3 (s) =La* (aq) + 3 I03 (aq) Tap here or pull up for additional resourcesSAMPLE PROBLEM 10 Calculate the number of milliliter of ammonia whose density is 0.99 g/ml, 2.3% by weight NH3 which will be required to precipitate the iron as Fe(OH), in a 0.74g sample that contains 22% FeO. RXN NH3 + Fe+3 Fe(OH)₂ + 3NH₂ +3 Rxn : : 3 NH3 + Fe + → Fe (OH)₂ + 3 NH ₂ 10
- QUESTION 56 Titration of a 0.485 g sample by Mohr method required 36.80 mL of the standard 0.1060 M AgNO3 solution. Calculate the percentage by mass of Cl- in the sample (MM NaCl=58.44 g/mol; AW Na+= 22.99 g/mol; AW Cl =35.45 g/mol). Cl- + Ag+ → AgCl(s) 28.6% 20.2% 18.5% 49.5%According to the reaction below: if 35.48 mL of H2SO4 with an unknown concentration were titrated using 1.122 M KOH, and it required 120.80 mL of the KOH solution to react with all of the H2SO4, what was the initial concentration of the H2SO4 solution in mol/L. H2SO4 +2KOH → 2H2O + K2SO4 Answer to THREE decimal places+ Question 8 Retaken The concentration of oxalate ion (C2042-) in a sample can be determined by titration with a solution of permanganate ion (MnO4) of known concentration. The net ionic equation for this reaction is 2MNO4- + 5C20,2- + 16H* → 2MN2* + 8H20 + 1OCO2 A 30.00 mL sample of an oxalate solution is found to react completely with 21.93 mL of a 0.1725 M solution of MnO4. What is the oxalate ion concentration in the sample? A) 0.3152 M B) 0.1821 M C) 0.02914 M D) 0.4312 M E) 0.05044 M
- Give good explanation ASAP Thanks a + 3b makes c Concentration of C is 2.73e-4 mol/l Concentration of B is 0.2 mol/l and 10 ml was added Total concentration is 250 ml. What is the concentration of a?A solution contains 8.38×10-³ M potassium hydroxide and 1.36×10-² M ammonium carbonate. Solid manganese(II) nitrate is added slowly to this mixture. What is the concentration of hydroxide ion when carbonate ion begins to precipitate? [hydroxide] = M Submit Answer Retry Entire Group 2 more group attempts remainingCurrent Attempt in Progress What are the molar concentrations of the ions in 0.31 M FeCl3? C(Fe+) =i M C(CI) = M eTextbook and Media Hint Save for Later ype here to search 18