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Question: A buffer contains 0.40M base, B, and 0.25M of its conjugate acid, BH+, and has a pH = 8.88. What is the pH after 0.0020mol of HCl is added to 0.25L of this solution? (assume HCl adds no volume to the solution)
Calculate the pH at the equivalence point for the titration of 0.25 M CH3COOH with 0.25 M NaOH. (For CH3COOH, Ka= 1.8 × 10^-5)
Aspartame (C14H18N2O5) is a solid used as an artificial sweetener. Its combustion produces carbon dioxide gas, liquid water, and nitrogen gas. What is the coefficient of aspartame in the balanced equation for the reaction? (Balance the equation wi..
a solution of copper sulphate cuso4 was electrolyzed between copper electrodes. copper of 6.4 grams was deposited on
When X-rays with ? = 1.937 Å are used, the second-order Bragg reflection from a set of parallel planes in a(n) cesium crystal is observed at an angle
Diamonds have successfully been prepared by submitting graphite to high pressure. Calculate the approximate minimum pressure needed at 298 K to turn graphite into diamond.
The mixture is extracted two times with 2.0 mL of NaOH ultimately separating the neutral compound and the benzoic acid. Following the extraction, 6 M HCl was added to both of the NaOH extracts, resulting in a precipitate.
meteorological balloon contains 375 L of helium at 29°C and 0.928 atm. If the volume of the balloon can vary according to external conditions, what volume would it occupy at an altitude at which the temperature is -40°C and the pressure is 0.031 a..
Small air bubbles in the salt bridge may not be a problem. How can the presence of air bubbles in the salt bridge alter the effectiveness of this salt bridge
Calculate the equilibrium amounts if initially 0.1 moles H2 0.2 moles I2 are mixed and equilibirum is established at 300K. Kc at this temperature is 70.
Draw a graph that shows the relative energy of the conformer as a function of the torsional angle. Make sure that you clearly label which conformer corresponds to which position on the graph.
An aqueous solution of a monoprotic acid HA (Ka = 4.33×10-1) has a pH of 4.88. What is the molarity of the solution? (i.e. [HA]+[A-].)
Calculate the {\rm pH} at the equivalence point for titrating 0.210 solutions of each of the following bases with 0.210 M\;{\rm HBr}. NH2oh, c6h5nh2
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