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Potassium hydrogen phthalate, KHC8H4O4 (KHP) is often used to standardize solutions of bases. The acidic anion reacts with strong bases according to the following equation:
HC8H4O4-(aq) + OH-(aq) ? C8H4O42-(aq) + H2O( )
0.982 g sample of KHP (this is not potassium-hydrogen-phosphorus) is dissolved in water and titrated to the equivalence point with 26.45 mL of NaOH solution. What is the concentration (M) of the NaOH solution?
Upon reaction with excess sulfamic acid, HSO3NH2, a 0.121g sample of a mixture of sodium nitrite, NaNO2, and sodium chloride, NaCl, produced 28.3 mL of nitrogen gas collected over water at 25.3 degrees Celsius and at a barometric pressure of 738 m..
at 25 degrees celsius the reaction h3o nh3 --gt nh oh- is first order in each reactant and has a rate constant of
if 11.2 L of N2 are reacted to form NH3 at STP, how many liters of hydrogen will be required to consume all of the nitrogen
Rubidium atoms are bombarded with 131 nm light. What is the kinetic energy of the ejected electrons
Standard reduction potentials are given on the next page. (a) Draw a diagram of the electrochemical cell, labeling all electrodes and solutions. (b) What is the pH in the Pt | H+ | H2 half-cell? (c) What is the value of the equilibrium constant fo..
A sample of neon gas has a volume of 282 mL AT 160 degrees celsius. The sample is cooled at constant pressure to a volume of 685 mL. What is its new temperature?
nh3 is kept in a cylinder with a movable piston at the temperature of 25 degree celcius and the pressure of 2.50 atm
Could a fluorescent organic compound be mixed with the silica gel to be used as a visualizing aid in place of ZnS
Calculate the rate constant of a first order reaction having a half life of 7.19 x 10-5 seconds. Enter your answer to 3 sig figs. Determine the bimolecular (second order) rate constant of a reaction if the initial reagent concentration decreases f..
an unknown solution contains only two absorbing species thymol blue and methylthymol blue. this sample had absorbance
Which one of the following reactions is a combination reaction. a. A + B -› AB b. AB + CD -› AD + CB c. HX + BOH -› BX + H2O d. A + BC -› B + AC e. AB -› A + B
What is the maximum number of electrons in an atom whose highest-energy electrons have the principal quantum number n=5
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