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what are the h3o and the ph of a propanoate buffer that consists of 048 m ch3ch2coona and 034 m ch3ch2cooh ka of
consider a solution formed by mixing 300 ml of 0100 m h2so4 245 ml of 0100 m hocl 250 ml of 0200 m naoh 250 ml of 0100
a biochemist needs 750 ml of an acetic acid-sodium acetate buffer with ph 450 solid sodium acetate nac2h3o2 and
calculate the ph at the equivalence point in titrating 0110 m solutions of each of the following with 70times10-2 m
assume that 290 ml of a 010 m solution of a weak base b that accepts one proton is titrated with a 010 m solution of
in words give step-by-step directions for drawing the mechanism for the reaction of 13-butadiene with hbrgive explicit
initially a mixture contains 0601 mol each of n2 and o2 in an 765-l vessel find the composition of the mixture when
a 260-l vessel contained 00160 mol of phosphorus trichloride 00115 mol of phosphorus pentachloride and 00903 mol of
sodium stearate c17h35coona is a major component of bar soap the ka of the stearic acid is 13 multiplied by 10-5 what
in the contact process sulfuric acid is manufactured by first oxidizing so2 to so3 which is then reacted with water the
an ideal gas is expanded reversibly from initial conditions of vi 10 l and ti 25c to vf 100l and tf 150c calculate
a 075-l bottle is cleaned dried and closed in a room where the air is 22 degrees c and 44 relative humidity that is the
show how you would synthesize di-tert-butyl ether from any starting material you would like that contains four or fewer
a 2400 ml buffer solution initially contains 30times10-2 m of hcho2 and 30times10-2 m of nacho2 what mass of the
what is the ph of a soft drink in which the major buffer ingredients are 66 g of nah2 po4 and 80 g of na2hpo4 per 355
1 when is ph pka for a monoprotic acid and why2 write the formula for each component in a buffer solution of acetic
a the h in a solution is 68 x 10-3 m what is the phb the ph of a solution is 370 what is the h what are oh- and pohc
a vessel containing saturated vapor steam at 175 c is cooled to 40 c the total mass of its contents is 450g determine
at 25 degrees the rate constant for the first order decomposition of a solution is 00640 if the starting concentration
for the d3h point group draw 3x3 transformation matrix for each of the operations of this point group on a set xyz
the three isomers 0-m- and p-xylenes are are very difficult to distinguish via proton nmr however they are
find the equation for the radial distribution function for the 4p orbital and calculate the position of the radial
to prepare 140 l of a buffer solution having an ionic strength of 0130 and a ph of 700 would requireof
how large should n be in order to approximate the integral from 0 to 1 sinx2 dx accurate to with in 001 using the