I submitted previous answers to other questions 8n order to answers C. (c) A student prepares a solution of sodium sulfate, Na„SO,, by adding 6.25 × 10 Moramsulturic acid, H,SO,, from a burette to 25 Ocm of 0.124 mol dm-3 NaOH in a conical flask.2NAOH(aq) + H,SO,(aq) Na, so̟(aq) + 2H,0(1)vat ulate the minimum volume of the H.SO, that the student would need to completely reactwith the NaOH present.volume of H,So̟ =cm3 12.(b) A student knew that calcium hydrocide could be made by adding calcium to water.The student added 0.00131 mol of calcium to a beaker containing about 100cm of water.A reaction took place as shown by the equation below.All the calcium hydroxide formed was soluble.Ca(s) + 2H,0(1) → Ca(OH))z(aq) + H2(g)(1) Calculate the mass of calcium that the student added.mass of 1 molemass of 0.00131 moles of caloum y0x0.ool31of calclum=Imodbon-mass of calcium = Q 05 24(H) Calculate the volume of hydrogen gas, in dm2, produced in this reaction at roomtemperature and pressure, RTP.1mol of Ca sives Imol of Hz9.00131molof co, sives 0100131 Mol of MzAt RTRP-latmT 298KR= 0. 081atmcVE hRi, 0.0013I molx o10821 dn X298K00,032Tatmvolume of hydrogen gas =dm3nolik12=1 d oi321 0.032dm(ii) The student 'transferred the contents of the beaker to a 250 cm3 volumetric flask andwater was added to make the solution up to 250 cm³.Calculate the concentration, in mol dm3, of hydroxxide ions in the 250 cm solution.Imd of ca gives Imd of CaoH).0.00131 Mol of ca gives o.00131nol of Ca COM2numberof noles of Ca Co02- 0.00131 moles24Ca (ol4 > Catloi concentration =mol dm32molezmoles of hydroxideions,Imole of ca(OH) sives zmoles of hydrovidehumber of hydroxite ions= 2x 0,00131 moles0,00262 moley0,00 262 molesZ5o x lo3(oncenfration of nydroxide -0,01048 mol dn

Answered: Image /qna-images/answer/4b9a5c81-a487-4634-8ad6-03c6681a1643.jpg

16 dent prepares a solution of sodium sulfate, Na So., by adding 6.25 x 10 2 mol dm sulturic acid, H,SO,, from a burette to 25 Ocm of 0.124 mol dm 3 NaOH in a conical lask. 2NAOH(aq) + H,SO,(aq) - Na,so.(aq) + 2H,0(1) Calculate the minimum volume of the H.SO, that the student would need to completely react with the NaOH present. volume of H,SO = cm3 .........

16 dent prepares a solution of sodium sulfate, Na So., by adding 6.25 x 10 2 mol dm sulturic acid, H,SO,, from a burette to 25 Ocm of 0.124 mol dm 3 NaOH in a conical lask. 2NAOH(aq) + H,SO,(aq) - Na,so.(aq) + 2H,0(1) Calculate the minimum volume of the H.SO, that the student would need to completely react with the NaOH present. volume of H,SO = cm3 .........

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter24: Introduction To Spectrochemical Methods

Section: Chapter Questions

Problem 24.4QAP

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