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1) If you mix equal concentrations of reactants and products, in which direction would the following reaction proceed. Right or left?
H2SO4(aq) + NH3(aq) <--> NH4^+ (aq) + HSO4^- (aq)
(I'm guessing the arrow is double sided...don't know if that'll effect the answer?)
2) What is the pH of a 1.00 M HF solution? The Ka for HF is 7.2 x 10^-4. Please show your work for how you got this.
3) Calculate the pH of a buffer solution that contains 0.25 M benzoic acid (C6H5COOH) and 0.15 M sodium benzoate (C6H5COONa). Ka= 6.5 x 10^-5 for benzoic acid. Please show your work for how you got this.
Draw the major and minor resonance structure for the carbonate ion (CO3^-2). Include any formal charges, Indicate which are the major resonance structures and why.
ethoxypropan-2-ol can be made by the ring opening of an epoxide when sodium ethoxide in ethanol-water is used. A) Draw the skeletal structure of (R)-1-ethoxypropan-2-ol.
how do you calculate the number of equivalents of NaOH required to reach the equivalence point?
Mixtures of helium and oxygen are used in scuba diving tanks to help prevent the bends, which is a condition caused by nitrogen bubbles forming in the bloodstream.
The emulsifying agent from hand cream, a salt, is prepared from two chemicals. Write the structure of stearic acid.
2Al(s)+3H2SO4(aq) -> Al2(SO4)3(aq)+3H2(g) Suppose you wanted to dissolve an aluminum block with a mass of 15.5g. What minimum mass of H2SO4(in g) would you need?
what is the purpose of anhydrous CaCl2? Why it is important that none of the solid CaCl2 be included in the final distillation of your 1-bromobutane?
At 0.0C, if the volume of air is 1.8 mL and the pressure of the atmosphere that day is 665 mmHg, what is the number of moles of air?
vessel above eqm is established and at eqm, partial pressure of SO3 and SO2 are same, calculate no. of moles of O2 present at eqm
Ammonium carbamate (NH2COONH4) is found in the blood and urine of mammals. At a temperature of 424 K, Kc = 0.080 for the following equilibrium:
Explain how the carbonate system in natural waters provides buffering capacity
Compute the change in temperature when 1.8 g of sodium chloride is dissolved in 300.0 mL of water initially at 20C. The heat capacity of water is 4.184 J/mL/K.
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