solution A iron (II) nitrate zinc sulfate sodium chloride solution B sodium hydroxide manganese(II) iodide ammonium nitrate Does a precipitate form when A and B are mixed? yes yes yes no no no empirical formula of precipitate 0 0 0
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- H1 gramof Sampleof an impure mixture af NARCOZ and Natteo, containing impurties is dissalved and tityated with SN Hel wit p colourless after addition5mD otacid-Methyt ge is then added and 22ontof, acid reguired orange tochange the of Naz coz benotphthalein as indicator, the sotudion Curns this indicator what is the percoulye and Na Heoz in the sample ?La) Provide the balance cauation for this veaction Consider th hydrasne Na He NHs Caq)NA ockag)+ H2 OpN2H rcacko to produce 4- st Na Cl(an) b)if, 136.0.me of 0.375 M amming solution reacts With188L Na OCL at STP Which the immiting reagent and Which is the excess regont. is c)if 250ML hudrazine gas is collected at STP, wheet is eaction. the percend yield of theChromium of ten ir electoplated me tals on the and even plorticr to prodrce a uhiny metallic oppearante How mang groME (ct- 994 g lmol) 年 chromium Would plate out 10 ampu are paared through C (Nos)s when of cunent ro1tion of 5.36 hours? the electroly tic cel for
- tebrite a letence equation between HInd Bac012 in Solution with physical HANDWRITIEN states. GIVE EXPLAINED ANSWERThe Sn in a 0.4352 g mineral specimen was reduced to the +2 state with Pb and titrated with 29.77 mL of 0.01735 M K2Cr2O7. Identify:1) balanced chemical reaction2) appropriate indicator and its type3) color at the end point4) % SnO2 in the sampleA 4.912-g sample of a petroleum product was burnedin a tube furnace, and the SO2produced was collectedin 3% H2O2.Reaction:SO2(g)+H2O2→H2SO4A 25.00-mL portion of 0.00873 M NaOH was introducedinto the solution of H2SO4, following whichthe excess base was back-titrated with 15.17 mL of0.01102 M HCl. Calculate the sulfur concentrationin the sample in parts per million.
- Riedick the pr ducts/ifany that will be fomes bu Me gE no reachion dccurs, yeachion below woite R azter the geaction arrow 1+ AlCs) -y e praducts/if nay) d by-the neachion belain E no reachion Occurs , Warit Bredict the that will be forme Nh arter the renchion arrow reachin Colalag)t Mals)- t ー7 Bodict the products (if any) that will be forimed be the genchion below. na reachon Dccurs, write NR the reachin arrow axter PtClala9)+Mn(s)0.890 g KIO3 was dissolved to give a 80.00 mL Iodate solution. 35.00 mL aliquot reactedwith the iodide to form triiodide. The liberated triiodide was titrated and consumed 11.65 mL of theS2O32- solution to reach endpoint. Calculate the concentration in molarity of the Na2S2O3solution.Compare the solubility of lead chromate in each of the following aqueous solutions: Clear All 0.10 M Pb(NO3)2 More soluble than in pure water. 0.10 M (NH4)2Cro4 Similar solubility as in pure water. 0.10 M NaNO3 Less soluble than in pure water. 0.10 M NHẠCH3CO0 Submit Answer Retry Entire Group 9 more group attempts remaining
- 7) what is the pH at the equivatent point in the titration of 5 mmol Potassium acid phthalate dissolved in 100 mel of water and titrat ed with 0.tM NaoH 9 k,= 4 tr56 %3D Ans.: 8.1656EF3A79haQqAAmRHdBhZQvrwNmdPsuA4 Ing and Conditions Subject Test pard Note: - You are attempting question 5 out of 12 To find the Ce content of a solid, 4.37 g were dissolved and treated with excess iodate to precipitate Ce (IO,),. The precipitate was collected, washed well, dried, and ignited to produce 0.104 g of CeO, (FM: 172.114). What was the weight percent of Ce in the original solid? (A) 1.84% (B) 1.49% (C) 1.94% (D) 1.74% Answer A B Submit P Type here to search 王 立A Sample Containfng mmol of KNOS is "parsed 6.00 x10-2² mmol of vesay ad z.00x102 mmol af ves@y ad 2.00x1o2 though a cation -excharye Column. the Colculate. volume o.02.00 M NaH of needed to titrete the elwate,