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Consider the titration of a 24.0 mL sample of .175 M of CH3NH2 with .155 M HBr. Determing each of the following:
A. initial pHB. the volume of added acid required to reach the equivalence pointC. pH at 5.0 mL of added acidD. pH at one-half of the equivalence pointE. pH at eq. pointF. the pH after adding 5.0 mL of acid beyond the equivalence point
The Ka for boric acid is 7.3 x 10-10. What is the pKa of boric acid?
CH3COOH (Ka=1.8x10^-5) was titrated with 0.50 M NaOH. Calculate the pH after addition of 30.0mL of NaOH
how efficient is the extraction of the tea leaves containing 1.0 g of caffeine with the two 3 ml portions of chloroform
The chemist used a thermometer that was miscalibrated by 2(degrees)c over the entire thermometer scale. will this factory error cause the reported energy of neutralization to be higher, lower, or unaffected? explain.
Calculate the heat released when 1 kg of white phosphorus is allowed to burn in air at a constant pressure of 1 bar.
Calculate the heat that must be supplied to 12.40 g of Ne(g) at 0.150 atm to raise its temperature from 25.0°C to 51.0°C under the following conditions
a box contains a mixture of small copper spheres and small lead spheres. the total volume of both metals is measured by
Draw the expected titration curve for the titration of methylamine (a weak base) with hydrochloric acid? What would be the nature of the salt produced at equivalence point of this titration?
Calculate the amount of solution (g or mL) that contains each of the following amounts of solute. Express the answer to two sig fiugres and include the appropriate units.
Draw clear representations of the two chair conformations of cis-2-methylcyclohexanol. Circle the hydrogen atoms which are anti to the hydroxyl group.
What is the value of Ksp for Ag2SO4 if 5.54 g is soluble in 1.00 L of water?
What is the concentration of the hydroxide ion given that the concentration of the hydronium ion is 1.5 x 10^-5 M
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