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Problem- 1) A buffer solution contains 0.420 M NaHSO3 and 0.378 M Na2SO3.
If 0.0235 moles of potassium hydroxide are added to 150 ml of this buffer, what is the pH of the resulting solution?
(Assume that the volume change does not change upon adding potassium hydroxide)
pH =
Propanoic Acid, HC3H5O2, is a weak acid. A 0.125 M solution of propanoic acid, HC3H5O2, dissociates 1.020%. Using this information, calculate the pH of the 0.125 M solution of propanoic acid.
In a certain hypothetical experiment the initial concentration of reactant is 1.00 and its rate constant is 0.0150 . It follows a zero-order reaction mechanism for the consumption of . Plot the graph of concentration versus time. Take the time int..
a piece of metal weighing 5.10 grams at a temperature of48.6oc was placed in a calorimeter into 20.00 ml ofwater at
detonation of nitroglycerin proceeds as follows 4c3h5n3o9 12co2 6n2 o2 10h2oa if a sample containing 2.00 ml of
Explain why light intensity is dependent on the distance the detector is from the light source. Describe the mathematical relationship. Explain why all comparative measurments for this experiment should be made with the optical cable the same dist..
Compute the boiling point of this solution if Kf and Kb for H 2 O are given as 1.86°C/m and 0.512 °C/m , respectively.
How much energy is dissipated as heat, which is exchanged btwn the system and the heat-sink?C. What is the delta U for the above process?
Calculate the pH of each of the following strong acid solutions: 2.17 x 10^-2M HNO3 (express using 3 decimal places) 0.320 g of HClO3 in 3.00L of solution (express using 3 decimal places)
If a person were to say that a scientific finding was replicated, he or she would be saying that the finding was
Calculate the pH of a solution prepared by mixing 0.0800 mol of chloroacetic acid plus 0.0400 mol of sodium chloroacetate in 1.04 L of water. (pKa of chloroacetic acid = 2.865.)
equal mass of water and ethylene glycol are mixed. what is the vapor pressure of this mixture at 100.c? the molar
The Born-Haber cycle is a series of steps that represent the formation of an ionic compound from a metal and a nonmetal. For example, the steps in a Born-Haber cycle for the formation of NaCl(s) consist of sublimation of the metal Na atom
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