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What do the ions that gave a precipitate when mixed with AgNO3 have in common?
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- What do the ions that gave a precipitate when mixed with AgNO3 have in common? Hint given: Identify the ions and the Group of the Periodic Table to which they belongGive the formula of the compound which will give a precipitate with BaCl2 but NOT with (NH4) 2CO3? a. AgNO3 b. Zn (NO3) 2 c. KCl d. Na2 SO4How many grams of precipitate will form when Na2SO4 reacts with 25 mL of 0.50 M Ba(NO3)2?
- The CO in a 20.3-L sample of gas was converted to CO2 by passing the gas overiodine pentoxide heated to 150℃, and I2 was distilled and collected to 8.25 mL of 0.01101 M Na2S2O3, then back titration with 2.16 mL of 0.00947 M I2 solution.Calculate the mg of CO (28.01 g/mol) per liter of sample.a. I2O5(s) + 5CO (g) → 5CO2(g) + I2 (g)b. I2(aq) + 2S2O32- (aq) → 2I-(aq) + S4O62- (aq)What do the ions that gave a precipitate with (NH4)2CO3 and NaPO4 have in commonQ5: A sample of 0.676g of an unknown compound containing barium ions (Ba+) is dissolved in water and treated with an excess of NazSO. If the mass of BasO, precipitate formed is 0.4105g. What is the percent by mass of Ba in the original unknown compound? Note: Mwt. of Ba =32, Mwt. of BaSo4 =233, Mwt. of Na2SO4=142
- Zhongli is a speleologist tasked to analyze the CaCO₃ content of a limestone stalactite. A 5.0000-g sample was dissolved in 25.00 mL of 1.350 M HCl, it was then heated to expel any CO₂ formed. The excess HCl was titrated to a phenolphthalein end point, it used 37.50 mL of 0.1200 M NaOH. How many moles of HCl was added initially to digest the limestone sample? How many moles of CaCO₃ is present in the limestone sample? What is the purity of the limestone in terms of %w/w CaCO₃?Give the formula of a compound which will give a precipitate with KI and K3PO4? a. ZnCl2 b. NaBr c. NiSO4 d. Pb(NO3) 219. What will be the result if 100 mL of 0.06 M Ca(NO3)2 is added to 50 mL of 0.06 M K₂C2O4? Assume the reaction takes place at 25°C and Ksp of CaC₂O4(s) is 1.7 x 10⁹. a. No precipitate will form b. A precipitate will form and an excess of Ca2+ ions will remain in solution A precipitate will form and an excess of C₂O42- ions will remain in solution A precipitate will form and both Ca²+ and C₂O4²- ions are present in excess c. d.
- Write a formula for the following precipitate and write a balanced net ionic equation for the reaction that occured between this precipitate and 3 M HNO3(aq). CO32- and 0.2M Pb(NO3)23.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 HCI ( 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?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 ww