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A 3.00 mL aliquot of 0.001 M NaSCN is diluted to 25.0 mL with 0.1 M HNO3.
How many moles of SCN- are present?
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- To prepare 1 liter of 0.10 M acetate buffer at PH 5.20.I need to mix _____g of CH3COONa molecular weight 82.03 g/mol with ______ml of 6.0 moler HCL and dilute the solution to the volume of 1 liter .pKa of acetic acid is 4.76..fill in the above blanks.??.A solution is prepared such that Li3+=3.0×10-3 M while PO43-=2.0×10-3 M. If the Ksp of Li3PO4 is 2.37×10-11, will a precipitate form in the prepared solution? Show your complete solution.A 0.4671 g sample containg NaHCO₃(Mwt=84.01mg/mmol) was dissolved and titrated with 0.1067 M HCl requiring 40.72 ml, find the percentage of NaHCO₃, in the sample
- 4. A 0.1036-g sample containing only BaCl2 and NaCl is dissolved in 50 mL of distilled water. Titrating with 0.07916 M AgNO3 requires 19.46 mL to reach the Fajans endpoint. Report the %w/w BaCl2 in the sample.A solution is prepared by mixing 100.0 mL of 1.0x10-2 M Pb(NO3)2 and 100.0 mL of 1.0x10-3 M NaF. Will PbF2 (Ksp= 4x10-8 ) precipitate?What is the solubility, in mol/L, of CaF2 in a 0.65 mol/L solution of NaF, if the ksp of CaF2, is 4.9*10^-11?
- A solution is prepared by mixing 20.0 mL of 0.100M Fe(NO3)3 with 20.0 mL of 0.00300M KSCN and 10.0 mL of DI water. Calculate the initial concentration of Fe^3+ in this solution? Give answer with correct amount of sig figs.If 50.0 mL of a 0.0010 M CaCl2 solution were added to 50.0 mL of 0.010 M Na2SO4 solution, would a precipitate of CaSO4 form? The Ksp of CaSO4 at 25oC is 2.4 × 10-5A 0.1036-g sample that contains only BaCl2 and NaCl is dissolved in 50 mL of distilled water. Titrating with 0.07916 M AgNO3 requires 19.46 mL to reach the Fajans end point. Report the %w/w BaCl2 in the sample.
- A 250.0-mg sample of an organic weak acid is dissolved in an appropriate solvent and titrated with 0.0556 M NaOH, requiring 32.58 mL to reach the end point. Determine the compound’s equivalent weight.(a) I f t he molar solubilit y o f CaF2 at 35 °C i s1.24 x 10-3 mol/L, what is Ksp at this temperature? (b) It isfound that 1.1 x 10-2 g SrF2 dissolves per 100 mL of aqueoussolution at 25 °C. Calculate the solubility product forSrF2. (c) The Ksp of Ba(IO3)2 at 25 °C is 6.0 x 10-10. What isthe molar solubility of Ba(IO3)2?0.900 g KIO3 was dissolved to give a 50.00 mL Iodate solution. 35.00 mL aliquot reactedwith the iodide to form triiodide. The liberated triiodide was titrated and consumed 8.65 mL of theS2O32- solution to reach endpoint. Calculate the concentration in molarity of the Na2S2O3solution.