In carbonate mixtures, Vpth > ½Vbcg for an NaOH, N22CO3 mixture. Try to explain why the relationship inverts and Vpth < V2Vbcg for an Na;CO3, NaHCO3 mixture.
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- Calc. the alkaline strength of a sample of impure K2CO3 in terms of percent K2O from the ff. data: wt. of sample = 1.000g; HCL used = 55.90 ml;NaOH used = 0.42ml; 1.000mlNaOH 0.008473 g KHC2O4 .H2C2O4 . 2H2O; 1.000ml HCL 2.500 ml NaOH.b My Questi x Co. How to Ca X N NSU Login X PeriodicTa X M Action Re x 0 mySigTau XG 4.25 ml to X ( NBA FinalX G scientific X + enow.com/ilrn/takeAssignment/takeCovalentActivity.do?locator%3Dassignment-take [References] A 1:1 mixture by moles of nitrous oxide and oxygen is often used as a sedative in dentistry. If the total pressure of this mixture in a cylinder is 3.75 atm, what is the partial pressure of each gas? Partial pressure of nitrous oxide = atm Partial pressure of oxygen = atm Submit Answer Try Another Version 3 item attempts remaining Previous Next Email Instructor Save and Exit Cengage Learning | Cengage Technical Support2-22. A 6.42% (w/w) Fe(NO,); (241.81 g/mol) solution has a density of 1.059 g/mL. Calculate (a) the molar analytical concentration of Fe(NO3)3 in this solution. (b) the mass in grams of Fe(NO;)3 in each liter of this solution.
- Content OWLV2 | Online teaching and lee X G How many mlof 0.552 M HI are x A cvg.cengagenow.com/ilrn/takeAssignment/takeCXPCompliantActivity.do?locator-assignment-take CHAPTER 4 - STOICHIOMETRY: QUANTITATIVE INFORMATION ABOUT CHEMICAL REACTIONS Page 1 of 3 Next O A saturated solution of zinc hydroxide, Zn(OH)2. has a pH of 8.7. What is the hydronium ion concentration of the solution? Is the solution acidic or basic? Concentration = M The solution is Cengage Learning Cengage Technical SupportWrite the expression for the K of H2PO;. HPO OH %3D [H2PO;] [HPO H,0*] %3D [H2 PO,] [H3 PO3[H3O*] [H2PO;] K= [H3 PO3][OH] OK= %3D [H, POE. Analysis of a mixture consisting of NaOH + NażCO3 + inert matter gives the following data: Sample portions are titrated. With one portion, an end point with phenolphthalein is obtained in cold solution, with 44.52 mL of 0.5000 N HCI. The other portion requires 46.53 mL of the acid for an end point with methyl orange. Calculate the percentage composition of the original sample. 10.00 g. Its aqueous solution is diluted to 250.0 mL and two separate 25.00 mL
- 3.A sample is known to contain NaOH, Na2CO3 NaHCO3 or compatible mixture of these together with inert matter. With methyl orange, a 1.100 g sample requires 31.40 mL of HCl ( 1.00 mL is equivalent to 0.0140g CaO). With phenolphthalein indicator, the same weight of sample requires 13.30mL of the acid. What is the percent composition of the sample? ww ww23A 0.20 g sample of primary standard Na2C204 (134 g/mol) needed 37.22 mL of of KMNO4 solution to reach the end point. What is the molarity of KMN04 reagent Please explain the solution in detail O a. 0.016 M O b. 0.055 M Oc 0.008 M O d. 0.100 My google- Yal X e Registration x OWLv2 | On X OWLV2| Ass X OWLV2 | On X n/takeAssignment/takeCovalentActivity.do?locator=assignment-take Use the References to access important values if needed for this questi Write the K, expression for the sparingly soluble compound iron(II) sulfide, FeS. If either the numerator or denominator is 1, please enter 1. Ksp Retry Entire Group 9 more group attempts remaining Submit Answer hp
- A series of solutions containing NaOH, Na.CO, and NaHCO, alone or in compatible combination, was titrated with o.1202 needed to titrate 25.00-mL portions of each solution to (1) a phenolphthalein and (2) a bromocresol green end point. Use this information to deduce the composition of the solutions. In addition, calculate the mass in milligrams of each solute per milliliter of solution. M HCI. Tabulated below are the volumes of acid (2) (1) (а) 22.42 (Ъ) 15.67 (c) 29.64 (d) 16.12 (е) о.00 22.44 42.13 36.42 32.23 33.33310. A 0.514 gram sample of NazCO, (106.0 g/mol) was dissolved in distilled water in a 100.0 mi volumetric flask. The molar concentration of Na,CO, in solution is: 0.0485 M 0.0370 M b. 0.4849 M 0.0340 M 0.0330 M d. е.5. Express the formality (F) the concentration of each of the following solutions: a. 28.4% NH3 by weight, having a density of 0.808 g/mL b. 69.5% HNO3 by weigt, aving a density of 1.42 g/mL