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a weak acid HA after treatment with 12 ml of 0.1 M strong base BOH has a PH of 5 . At the end point , the volume of same base required is 26.6 ml . calculate ka of acid.
A 0.0100 molal aqueous solution of a weak acid freezes at -0.0205 oC. Calculate the percent ionization of the weak acid, HA.
imagine you are driving at speed 60 mph through air filled with bugs at concentration 1 per cubic meter. the windshield
What is the osmotic pressure, in atm, of a solution formed by dissolving 17.4 g of PbCl4 in 0.336 L of water at 62.2 oC? (R = 0.0821 L-atm/mol-K; 0 oC = 273 K)
A given compound has the following solubility properties. At room temperature, it is souble in diethyl ehter but insoluble in both ethanol and water At high temperatures,
customers complain that the plants they buy look "different" when they get them home. The electric bill to run the store is excessive.
If the pH at the beginning of a titration was 4.25 and 9.60 at the equivalence point. What is the pH at the half equivalence point.
explain the basis of your decision and note if the bond(s) formed are ionic or covalent. a.) sodium and fluorine b.) nitrogen and hydrogen c.) silicon and oxygen d.) chlorine and bromine (please explain in details.)
Exactly 50.00mL of a 0.4230M solution of Na3PO4 was mixed with 100.00mL of 0.5151M HgNO3. What mass of solid Hg3PO4 was formed
What experimental error would cause a mistaken increase of copper into the cycle? What is done in the Experimental Procedure to avoid this "positive" error? Explain a. Explain what factors may contribute to a greater than 100% recover of copper in t..
Regard as the chemical reactions taking place during the electrolysis experiment, explain which observations should you expect to see
Calculate the pH of a solution formed by mixing 250.0 mL of 0.15 M NH4Cl with 100.0 mL of 0.20 M NH3. The Kb for NH3 is 1.8 x 10-5.
As shown here, one type of computer keyboard cleaner contains liquefied 1,1-difluoroethane (C2H4F2), which is a gas at atmospheric pressure. When the nozzle is squeezed, the 1,1-difluoroethane vaporizes out of the nozzle at high pressure, blowing ..
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