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A 119.6ml sample of 0.110M methylamine (CH3NH2) is titrated with 0.255 M HNO3 . Calculate the pH after the addition of each of the following volumes of acid.
0.0ml25.8ml51.6ml77.4ml
Perform a series of experiments for the reaction A?B+C and find that the rate law has the form rate = k[A]x. Determine the value of x in each of the following cases.
Predict if the following conditions would result in the formation of a preecipitate: a. 0.0025 M Fe3+ at pH 6.00 b. 0.0025 M Ba2+ and a 1.25x10-4 M solution of sodium sulfate c
Explore the effects of acid rain pre and post the 1990 Clean Air Act. Pair up and choose one of the topics listed below. One person should research and report on the damage that was being observed due to acid rain prior to 1990.
initially a 1.0 l container is filled with 2.0 mol of no2. as the system approaches equilibrium what happens to the
An 8mL sample of an unknown concentration of NH3 is titrated with HCl. It is found that 12mL of 0.10M HCl is required to reach the equivalence point. What was the concentration of the NH3 in the initial 8mL sample?
If you were transferring 0.2 mL of stock solution to another vial in order to begin performing a 1:5 serial dilution, what volume of DI water must be added to complete the dilution?
which will precipitate first BaF2 (ksp= 1.7*10^-6) or Baso4 (Ksp=1.08*10^-10)? if the Ba2+ concentration is adjusted to 0.05M, what are the molar concentrations of F1- and So4 2- remaining in the solution
Calculate the pH for each of the following cases in the titration of 50.0 mL of 0.240 M HClO(aq) with 0.240 M KOH(aq). The ionization constant for HClO can be found here (4.0×10-8).
What is the BOD concentration just downstream of the discharge point? (b) If the stream has a cross-sectional area of 10 m2, "what is the BOD concentration 50 km downstream? (BOD is removed with a first-order decay rate con- stant equal to 0.20/da..
What percentage of total HF molecules are in each of the first 6 rotational levels (J = 0-5) at 25oC ? Howmany levels (values of J) are required to account for 99% of all HF molecules at this temperature
Write the competing equilibrium that will occur when a strong acid is added to the following equilibrium: Ca2+(aq) + C2O4 2-(aq) equlibrium CaC2O4(aq)
a 500 ml gas sample is collected over water at a pressure of 740 mmhg and 25 celsius. what is the volume of the dry gas
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