dow many grams of Anilin çHs NH2 Should be solved in water to Prepare I liter containg oH iong Know that Kb CAniline)=410 a Solution of with -6 2*10 -10
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- Gold metal will not dissolve in either concentrated nitric acid or concentrated hydrochloric acid It will dissolve, however, in aqua regia, a mixture of the two concentrated acids. The products of the reaction are the AuCl4 ion and gaseous NO. Write a balanced equation for the dissolution of gold in aqua regia.A 0.450 M solution of KCIneeds to be prepared throughdilution. A 2.00 M stocksolution will be added to a0.250 L volumetric flask andthen water will be added to the0.250 L mark.Determine the volume (in mL)of the 2.00 M stock solutionof KCl needed to produce thissolution.What volume of water should be added to 100.0 mL of a 0.500 N Cr2(SO4)3·18H2O solution to obtain a final concentration of 0.075 M? Show complete solution *Also find the number of replaceable ions (n)
- 25 mL of a bleach (NaOCl) sample is diluted to 500 mL. An excessive amount of KI is added to the 20 mL solution taken from here and the I2 released is titrated with 35.5 mL of 0.0409 M NaS2O3. Accordingly, calculate the weight percent by volume of NaOCl in the sample. (Ma(NaOC:74,4 g/mol)What is the concentration of C6H5OHCOOH in a 0.1185 M C6H5OHCOONa? Answers are expressed in molarity. Ka for C6H5OHCOOH is 1.05e-3.With 30 g of silver nitrate (AgNO3) it is desired to prepare an aqueous solution of this salt at 22% m / m (dens. = 1.08 g / ml). Calculate: a) the volume of solution that can be prepared. b) The mass of solvent required
- Titration of a 10.00 mL sample of vinegar requires 19.45 mL of 0.2891 Msodium hydroxide to reach an end-point. Assuming a density of 1.01 g/mL forthe vinegar, what is the mass percent of acetic acid (HC2H3O2) in thevinegar?Differentiate the various methods of expressing concentration? Describe and give the formula of each. -will upvote if informativeeeWhat volume of0.317 M KOH solution will be required to titrations 25.00 mL of 0.285 M HN O3