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Question- You are asked to analyse for trace amount of Sn in an ore sample. the sample is initially digested with concentrated acid. once the digrstion has finished you noise that there is still some fine particulate matter in the solution that can not filtered out. Explain the atomisation method you would use in this instance and the advantages it has over alternative?
Write your solution in appropriate format and provide references
Consider the compounds water, ethylamine, acetone, and aniline, whose Kb values can be found here. Classify them by whether they can be appreciably (Keq>1) protonated by: pyridinium, CH3OH2 , both, or neither.
For a certain reaction delta H = -76.0 kJ and delta S= -234 J/K, if n=3 calculate E(standard) for the reaction at 25 degrees celsius
From Benzenesulfonic acid, how do we "desulfonize" it? In other words, what is the reverse sulfonation mechanism. (with displacement arrows)
choose the reaction type that is most likely to occur if the two chemical species given in each question are mixed.
Calculate the [NH3] and [H4Cl] in the buffer solution. Calculate the pH of the buffer solution.
Chemical Reactions explained in this solution, 1. Some sulfuric acid is spilled on a lab bench. It can be neutralized by sprinkling sodium bicarbonate on it and then mopping up the resultant solution. The sodium bicarbonate reacts with sulfuric ac..
What is the Kc for the following equilibrium CO2+H2=CO+H2O if CO=0.24M, H2O=0.38m, CO2=0.30M and H2O=3.3*10-2M
A certain liquid has a vapor pressure of 92.0 torr at 23.0 C and 236.0 torr at 45.0 C. Compute the value of delta H vap for this liquid. Determine it in kJ/mol. Compute the normal boiling point of this liquid. Find it in C.
What would be the change in pressure in a sealed 10.0 L vessel due to the formation of N2 gas when the ammonium nitrite in 1.9 L of 1.250 M NH4NO2 decomposes at 25 degrees C? NH4NO2 --> N2 + 2 H2O
Draft the pH curve for the titration of 20.0mL of a 0.150M solution of a weak acid, HA (Ka=5.4x10-6) with 0.150M KOH. Indicate the pH at: a) the beginning of the titration 0.0mL, b) after adding 10mL, c) 20mL, and d) 30mL of the titrant.
a 25 gram sample of a metal at 75.00 c is placed in a calorimeter containing 25 grams of water at 20.00 c. the
HClO is a weak acid (Ka = 4.0 × 10-8) and so the salt NaClO acts as a weak base. What is the pH of a solution that is 0.087 M in NaClO?
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