A solution is 0.0111 M in both Br– and SO42–. A 0.270 M solution of lead(II) nitrate is slowly added to it with a buret. What is the concentration in the solution of the first anion when the second one starts to precipitate at 25°C?

If there was a mixture between Ba2+ and Ni2+. propose an anionthat could be added to that mixture to selectively precipitate only one of the remaining cations. Ifthis anion was added to this mixture, which cation will form a precipitate, and which cation willremain in solution?

The formula H₂SO4 + 2 KOH --> K₂SO4 + 2 H₂O describes the reaction between sulfuric acid and potassium hydroxide. In the titration done, 20 mL of KOH with an unknown concentration is put into a flask with bromthymol blue indicator. The KOH solution was titrated with a 0.25 M H₂SO4 solution. Three trials were performed and each trial yielded to an endpoint of yellow-colored solution, which is the desired endpoint. After three trials, the following readings were obtained: 15.5, 15.1, and 14.9 mL respectively. Calculate the molarity of Potassium hydroxide. (Answer must be rounded off to 2 decimal places)

A chemistry graduate student is given 125. mL of a 1.20M dimethylamine ((CH3)₂NH) solution. Dimethylamine is a weak base with K₁=5.4 × 10-4. What mass of (CH3)NH₂Br should the student dissolve in the (CH3) NH solution to turn it into a buffer with 2 pH = 11.05? You may assume that the volume of the solution doesn't change when the (CH3)NH₂Br is dissolved in it. Be sure your answer has a 2 unit symbol, and round it to 2 significant digits.

A pipette is used to add 41 mL of 0.2 M Pb(NO3)2 to a 268.0 mL solution of 0.2 M NaF. Determine the equilibrium concentration of Pb2+(aq) in the final solution. Ksp(PbF2)=3.6E-8Include at least 3 significant figures in your answer.

Please don't provide handwriting solutions..

Be sure to answer all parts. Solid NaI is slowly added to a solution that is 0.0099 M Cu+ and 0.0081 M Ag+. Which compound will begin to precipitate first?    NaI    CuI    AgI Calculate [ Ag+ ] when CuI just begins to precipitate.    × 10   M   Enter your answer in scientific notation. What percent of Ag+ remains in solution at this point?    %

18.57grams of Ce(NO3)4 are required to make the solution. (I don't know if you need that information to solve this question but that is the answer to question a)

Determine the compound that is expected to be more soluble in acidic solution than in neutral or basic solution. О KBr O BaCl2 O Ni(OH)2 O Cu(NO3)2

A solution contains 7.34x103 M sodium carbonate and 6.93x10-3 M ammonium iodide. Solid lead acetate is added slowly to this mixture. A. What is the formula of the substance that precipitates first? formula = B. What is the concentration of lead ion when this precipitation first begins? [Pb2*) =| M