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Problem- A buffer solution contains 0.382 M ammonium bromide and 0.418 M ammonia.
If 0.0268 moles of perchloric acid are added to 125 ml of this buffer, what is the pH of the resulting solution?
(Assume that the volume change does not change upon adding perchloric acid)
pH =I am in hurry anyone is there provide me the answer in quick phase
Water softeners remove metal ions of Ca2+ and Fe3+ by replacing them with enough Na+ ions to maintain the same number of positive charges in the solution.
consider the system introduced in example 3.b.2 p. 97 in which a 2 l sealed jar half filled with water and half filled
fe2o3 2al -----gt 2fe al2o3what masses of ironiii oxide and aluminum must be used to produce 15.0 g of iron? what is
The lead contained in a 0.2000 g sample is precipitated as PbCrO4. The precipitate is filtrated, washed and re-dissolved in acid to give lead ions and dichromate.
Draw the structure of the unbranched isomer of C5H11Br that is most reactive in an SN2 reaction.
a 0.2200g sample of 99.35 pure copper wire is dissolved in concentrated nitric acid. after the addition of an excess of
What is the minimum amount of 6.2M H2SO4 necessary to produce 25.7g of H2 (g) according to the following reaction?
1why is an acetyl group added to aniline making acetanilide and then removed to regenerate the amine group in
A sample of hydrogen gas was collected over water at 21°C and at a pressure equal to the atmospheric pressure of 748 mm Hg. The volume of the sample was 512mL. Explain how many grams of H2 are in the sample. The vapor pressure of water at 21°Cis 1..
A buffer solution is prepared by adding 0.20 mole of NH3 and 0.30 mole of NH4Cl to enough H2O to make one liter of solution.
The vapor pressure of dichloromethane, rm CH_2Cl_2, at 0 rm ^{circ}C is 134 rm mmHg. The normal boiling point of dichloromethane is 40. rm ^C. Calculate its molar heat of vaporization.
atomic masses. 6 pts an element has two naturally occurring isotopes isotope a has a mass of 120.9038 amu and a
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