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in the synthesis of methyl salicylate from salicylic acid there are density of methyl salicylate methylene chloride and
would you expect benzene to be more reactive or less reactive than toluene toward electrophilic substitution
calculate the ph of a 450 ml solution formed by adding 210 ml of 2000 m acetic acid to 240 ml of 1200 m potassium
1 calculate the h3o ion concentrationand ph of a solution formed by adding 215 ml of 100 m acetic acid ch3cooh to 215
100 ml of 200 m hcl is titrated with 250 m of naoh what is the ph after 50 ml of the base has been added what is the ph
a buffer is created by mixing equal concentration is nh4 and nh3 calculate the volume of both solutions needed to
a 2500 ml sample of a 1028 m monoprotic weak acid solution has a ph of 348 after the addition of 1245 ml of 1106m naoh
what is the solubility in m of pbcl2 in a 015 m solution of hcl the ksp of pbcl2 is 16 x
a 250-ml sample of 0150 m hydrazoic acid is titrated with a 0150 m naoh solution what is the ph after 133 ml of base is
the acid-dissociation constants of sulfurous acid heso3 are k a1 17 x 10-2 and k a2 64 x 10-8 at 250 degc calculate
a solution contains 200mmol hf dissolved in 100ml h2o this solution is titrated at 25oc with 0100m naoh
one liter of a buffer solution is made by mixing exactly 500 ml of 1000 m acetic acid and 500 ml of 0500 m calcium
what volumes of 01000m acetic acid and 01000m sodium hydroxide should be mixed to prepare 1000l of a buffer solution of
draw the structure of diacetylferrocene comment on the distribution of the two acetyl groups over the two aromatic
determine the empirical formula and the molecular formula of a compound that has the compostion of 800 c and 200 h the
at 1000 k the equilibrium constant for the reaction br2 g 2 br g is 28 x 104 pressure is in atmospheres what does g
the equilibrium constant kp for the reaction n2o4 g 2 no2 g is 0142 at 298 k what is g for the
if the enthalpy of vaporization of ch2cl2 is 290 kj mole-1 at 250 oc and the entropy of vaporization is 925 j mole-1
for the decomposition of caco3 s into cao s and co2 g at 1 atm estimate the minimum temperature at which you would
the most intense line in the cerium spectrum is at 4187 determine the frequency of the radiation producing this
for the reaction 3 c2h2c6h6 at 25c the standard enthalpy change is -631 kj and the standard entropy change is -430
a cyclo-butadienec4h4 has a delocalized pi system write out the huckel secular determinant equation for
a newly isolated natural product was shown to be optically active if a solution of 20 g in 10 ml of ethanol in a 50 cm
a 545 g sample of a weak acid with ka 13 times 10 - 4 was combined with 520 ml of 600 m naoh and the resulting