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to standardize a solution of naoh one uses a primary standard called potassium hydrogen phthalate khp it is a
what is the ph of 020 m nacl 2 what is the ph of 020 m nh4no3 3 what is the ph of 020 m
what is the concentration of kmno4 when you mix 2 ml of 160 m kmno4 with 10 ml of 250 m oxalic acid assuming that it
1 ml of agcl dissociates into ag and cl- ions with concentrations of 13x10-5 mollwhen 1 ml of hcl is added what are the
sodium metal reacts with water to produce hydrogen gas and sodium hydroxide according to the chemical equation shown
at 1atm pressure ice melts at 27315k in addition deltahfus 6009 kjmol density of ice 092gcm3and density of liquid
determine the concentrations of the following ionic species present in a 0333 m solution of the diprotic acid h2so3 for
the change in the gibbs energy of a certain constant-pressure process as a function of temperature was found to fit the
the addictive painkiller morphine c17h19no3 is the principal molecule in the milky jiuce that exudes from unripe poppy
the size by thef an atom is sometimes considered to be measured by density of the radius of a sphere that contains 90
calculate the concentrations of hydroxide and hydronium ions in a solution prepared by dissolving 0308 g of solid naoh
why would the cell potential be higher with the addition of 6 m na2s solution to 001 m of cuso4 compared to 6 m nh
positronium consists of an electron and a positron same mass opposite charge orbiting round their common centre of mass
after exhalation human alveoli have an average radius of approximately 005 mm when inflated by inhalation the radius
how many milliliters of 34 m nh4cl must be added to 250 ml of 023 m nh3 to obtain a buffer solution having
a 500 g sample of liquid water at 250 degree c is mixed with 290 g of water at 45 degree c the final temperature of the
determine the ph of a solution that is 107 hcl by mass assume a density of 101 gml for the
calculate the ph at the equivalence point in titrating 0100 m solutions of each of the following with 0061 m
based on the following definitions of stereospecifc and stereoselective propose a reaction that is stereospecific but
how would one prepare 10ml of a 025m hcl solution if 1m hcl was available how much 1m hcl is needed how much distilled
magnesium phosphate precipitates from an aqueous solution does the entropy of the system increase or
the enthalpy of vaporization of ethanol is 3856 kjmol it has a boiling point of 35144 k what is the difference in
you have 5 l of an ideal gas at 25 ordmc and 5 bar are expanded to a final pressure of 100 bar assuming cv32 r
without using equations explain why delta s for a liquid or solid is dominated by the temperature dependence of s as
a sample of 15 g nawo4 dehydrate is dissolved in 25 ml di h2o 75g granulated zn was added then heated to 70 c 75 ml of