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A buffer solution contains 0.23 mol of carbonic acid (H2CO3) and 0.55 mol of sodium hydrogen carbonate (NaHCO3) in 2.10 L. The Ka of carbonic acid (H2CO3) is Ka = 4.3e-07. (a) What is the pH of this buffer? pH = (b) What is the pH of the buffer after the addition of 0.13 mol of NaOH? (assume no volume change) pH = (c) What is the pH of the original buffer after the addition of 0.34 mol of HI? (assume no volume change) pH =
The wavelengths of the sodium doublet can be accurately measured despite the fact that they are very short. The IUPAC standard for the meter is, in fact, based on the wavele
Find delta heat formation of butane. C4H10 + 13/2 O2 ---> 4 CO2 + 5 H2O. Delta H comb= -2881.9 Delta Heat formation of CO2 = -393.5kJ/mol Delta Heat formation of H2O = -241.
Explain the rate law for the solvolysis of benzyl bromide in 50% ethanol/50% water at room temperature (24C) is given by: rate = 2.9 x 10-5 (benzyl bromide)(OH-) + (benzyl b
How can I find the pH and volume (mL) of 0.0411M KOH needed to reach the equivalence point in the titration of 23.4mL 0.0390M HNO2? The question doesn't give me a Ka or Kb v
A student accidentally mixed small pure white crystals of napthalene into a small vial containing small white crystals of disodium malonate. What can she do to purify the di
Hydrogen has two naturally occurring isotopes 1H (mass= 100783), and 2H (mass= 2.0140). If the atomic weight of hydrogen is given as 1.0079, which one is the more abundant i
In one form of the Fullerene C60 molecules C60 form a cubic - closest packed array of spheres with unit cell edge length of 1410pm. Explain what is the density of crystallin
When ethyl methyl ketone are oxidised by the action of Selenium dioxide, what is the mechanism of the reaction?Please explain with some other examples of ketones having both
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