Question

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Data and Observations be sure to write down how many milliliters (ml) of the HCl was used to titrate the 5.0 ml of calcium hydroxide. Remember to include the appropriate significant figures from your titration. Trial Volume of HCI needed 2.8 ml 2:5 ml 2.5 mL 2.7mL [Ca?"] [OH-] 0.014 OM 0.028M 0.0125m 0.025M 0.0125 0.025M 10.0135M 10.027M 1.1x105 7.8 x 10-6 7.8 x 10-6 9.8x10-6 (a) Using the data above, you will need to determine the Kip for Ca(OH)2. Thus you will need to calculate the moles of OH and moles of Cam in solution. HC- Color). • CI + 2 H2O First, calculate the moles of Ca? in solution Hint-ml HCI → LHCI mol HCI mol Ca(OH)2 mol Ca? 2.8 mL x 12 x 0.050 mo HCL x inal Ca LOH)₂ x mol Ca 10 mL ILHO 2 mol HCl Imol Ca(OH)₂ = 7x10-5 mol Carl - 2- 2.5 m2 x 12 x 0.050 md HCl Imol Ca(OH)2 Imol 63+ 10²mL ILHCl 2 mol HCl Imol Ca(OH). = 16.25 x 10 simol Cant 3. 2.5 mL x L xo.osomol HCl x lnd Ca(OH)₂ x Imolat 103mL ILHCI a mol HCL mol Ca(OH) = 16.25x10 5 mol Cart 4.2.7 mL x 12 x 0.050 mol HCl x lnd Ca(OH)₂ x lnd Cast 10²mL ILHCI and Hel lind Ca(OH) 6.75x105 mol Ca 2+ 124

Answer 1

1373-995) = -1993616320 @ = – 22 995.0 u. $$-08-09-622995–235745.) 2.95 =-157.godek ulk -1932 373 (RSP) = 6.5x10-5 at 22c (kselav = g.14,06 at loc aho at 22°C 44° — - ет, ЕР |--2.3x8.3°(23+22) 106.50m) 3-5631sxlos 165x163) =+23577-5 Veule. t she at boiling point [ooc ) sh = -2.3 RT los kse =-2.348-3* 373 bos 6-12 00 +35899.5 ® 4Sat = -22995—35394 builos darba 22995=34204 = -1578/ ® Al is ve, hence exothermic Ancolauleted in 3rd part Soo TAS 26504) 28+] = 0.005 X200 = 0.002 Soo Florj = 0.00 2X 90 - 00012 Q= (68+2x1809-) (002) 2 (10012] - 4.886-9 KSPAS ) = 9x512 - Qastrot) > Kip (Astro) so Precipitate fere. o oho = 2BR los (ka) t - 1 1 2 = 2.3483 108 SIX 10 07 6x103 ons 373