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Liquid ammonia (anhydrous NH3(l)) is often used as a solvent. Like water, ammonia undergoes autoionization by the transfer of a proton: 2NH3 NH4+<-----> + NH2-, K = 1×10^-33 at -50°C Since ammonia is better proton acceptor than water, the ionization of acids is relatively enhanced in liquid ammonia. For example, acetic acid is a strong acid in liquid ammonia. part( a)Estimate [NH4+] (mol/L) in pure (i.e. neutral) liquid ammonia at -50°C.? part(b)Calculate [NH4+] (mol/L) in a 3.93×10-10 M solution of acetic acid in liquid ammonia at -50°C? part (c) Estimate [NH2-] (mol/L) in a 3.93×10-10 M solution of acetic acid in liquid ammonia at -50°C
For the acid-base titration combination of NaOH with 1.5 mol HCl, find the number of moles of NaOH that would be the chemically equivalent amount of HCl. Answer in units of mol.
What is the net ionic equation for the following redox reation in basic solution? CrO4{2-} oxidizesHSnO3{-} and reduces to CRO2{-}
What mass of sucrose (C12H22O11) should be combined with 494 g of water to make a solution with an osmotic pressure of 9.00 atm at 320 K?
Chloroform has a molar mass of 119.4 g/mol and a density of 1.499 g/cm^3. Estimate the volume of the above mixture using this information.
The volume of oxygen collected over water is 226 mL at 25°C and 503.0 torr. Calculate the dry volume in milliliters of oxygen at STP.
A current of 1.26A is passed through an electrolytic cell, forcing the following reaction. What is the total volume at STP after 7.44h
protein used as standards on an SDS- polyacrylamide gel are 0.80 and 0.41, respectively. What is the apparent mass of a protein having a mobility of 0.62 on this gel?
Assuming the mixture has the same specific heat (4.184J/goC) and density (1.00 g/cm3) as water, calculate the heat (in J) transferred to the surroundings, qsurr.
Write the reactions for the preparation of the diaonuim salt for the coupling of the salt with the sodium salt of 2-napthol. 2. Write the reaction of the sodium salt of para red when treated with 1 M H2SO4. Why does a precipitate form?
The vapor pressure of methanol at 30. oC is 158 torr. What mass (in grams) of methanol actually evaporates?
Give five very important precautions to be taken into consideration while preparing an alcohol using Grignard reaction, explain each one
Lithium iodide has a lattice energy of -7.3 times 10^2 kJmol and a heat of hydration of -793 kj/mol. Find the heat of solution for lithium iodide.
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