Redox titration: What volume (mL) of Na2S2O3 (0.215 M) solution is required to completely react with 2.236 g of I2? I2 (aq) + 2 S2O32- (aq) --> S4O62- (aq) + 2 I- (aq) (Could you explain in as much detail possible?)
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4.9) Redox titration: What volume (mL) of Na2S2O3 (0.215 M) solution is required to completely react with 2.236 g of I2?
I2 (aq) + 2 S2O32- (aq) --> S4O62- (aq) + 2 I- (aq)
(Could you explain in as much detail possible?)
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- (3) 11. In a titration it is found that 97.7 mL of 0.154 M NaOH(aq) is needed to neutralize 25.0 mL of a solution of HCl(aq). Calculate the concentration of the HCl solution. Show your work. [Hint: Write a balanced equation for the reaction first.]10. If 29.50 mL of 0.175 M nitrous acid neutralizes 50.0 ml. of harium hydroxide, what is the molarity of the base? 2HNO;(aq) + Ba(OH);(aq) Ba(NO:)(aq) + 2H;O(1)6. What volume, in mL, of 0.100 M NaOH is needed to neutralize 25.0 mL of 0.1500 M H,CO,? NaOH(aq) + H₂CO3(aq) Na₂CO3(aq) + H₂O(1) 5
- What mass of PbCl, can form from 0.235 Lof 0.110 M KCI solution if there is plenty of Pb(NO,), present? Molar mass of PbCl, is 278.1 g/mol Balanced reaction: 2KCI[(ag) + Pb(NO,blaq) – PbCl,(s) + 2KNO,(aq) O7.19 g 03.59 g O5.94 g O180g 0130 gA buffer solution is prepared from a generic weak acid "HG" and the salt KG. The K, for HG is 3.7 x 106. What (net) chemical reaction will occur when HNO, is added to the busfer solution? O No reaction will occur. The buffer prevents reaction. O KG + HG + HNO, HKG+ + HNO,G- G-+ H3O' --> HG + H2O O HG + NO, -> HNO3 + G O HG + H3O --> H2G" + H2OThe precipitation of some ion can be treated as completed if the mass of the remaining ions in precipitatedsolution will be less than 0.0001 g (the minimal mass can be weighed using typical lab balance). Calculate: (a) the molarity of Ag* ions in 100 mL of solution, which corresponds to 0.0001 g of remaining Ag* ions; (b) the molarity of (NH4)2CrO, needed to get saturated solution of Ag2CrOA (pK° sp = 11.92) with remainingconcentration of Ag* equal to found on the previous step.
- 9. Solid sodium carbonate, Na,CO, is used to determine the concentration of a HBr(aq) by titration. What is the role of sodium carbonate in this titration? (A) Catalyst (B) IndicatorA8 (C) Primary standard (D)Proton donor euld bne el hotsolon (A) nielerd auld lom onolbni Vegnto nouloe s lo ophar Hq es Short Answer 1. Consider the following equilibrium for the chemical indicator phenol red, HInd, at pH = 7.3. 0.00 H,0 = H,O* + Ind red HInd + Yellow If 10.0 mL of 0.10 mol/L NAOH(aq) is added, how will the concentration of H,O* (aq) be affected, and what is the color of the resulting solution?Module 8: H X 7087483#/7087483/16/2 % General Chemistry 4th Edition McQuarrie Rock Gallogly Question 25 of 35 - Module 7 Ho X [13] = x10 TOOLS Topic: Week 4 Discussion Resources C Give Up? The amount of I5 (aq) in a solution can be determined by titration with a solution containing a known concentration of S₂O3(aq) (thiosulfate ion). The determination is based on the net ionic equation 2S₂O3(aq) + 13(aq) →SO (aq) +31-(aq) Given that it requires 41.0 mL of 0.450 M Na₂S₂O3(aq) to titrate a 20.0 mL sample of I3 (aq), calculate the molarity of 15 (aq) in the solution. Hint University Science Books presented by Macmillan Learning M Question Source: McQuarrie, Rock, And Gallogly 4e-General Chemistry C CA 26.50 mL solution of Fe2+ required 17.50 mL of 0.175 M KMNO, to reach the end point. 5 Fe? +(aq) + MnO, (aq) + 8 H+ 5 Fe3 + (aq) + Mn² +(aq) + 4 H,O(1) Calculate the concentration of the Fe² + solution. [Fe?+] = M
- How many milliliters of 0.250 M Na2S2O3 solution are needed to titrate 2.447 g of I2 to the equivalence point? I2(aq) + 2 S2O32-(aq) S4O62-(aq) + 2 I -(aq)app.101edu.cо Question 14 of 15 Submit A solution of phosphoric acid (HPO,) with a known concentration of 0.250 M HAPPO is titrated with a 0.800 | M NaOH solution. How many mL of NaOH are required to reach the third equivalence point with a starting volume of 72.0 mL H,PO, according to the following balanced chemical equation: НРО, + 3 NaOH -> NA PO, + 3 Н.о 4 STARTING AMOUNT ADD FACTOR ANSWER RESET *( ) 0.800 6.75 x 104 2 1 0.250 0.0675 22.5 1000 3 67.5 7.50 72.0 0.001 43.2 L HAPPO mol NaOH М НАРРО g NaOH L NaOH mL H,PO, mL NaOH M NaOH g H PO mol HPO, +A beaker containing 0.400 g KHP was titrated with NaOH solution. The pale pink end point was reached after 16.45 mL of NaOH solution was dispensed. What is the molarity (in mol/L) of the NaOH solution?