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Question- A buffer was made by mixing 0.1488 moles of HCO2H with 0.1800 moles of NaHCO2 and diluting to exactly 1 liter. What will be the pH after addition of 10.00 mL of 0.2412 M RbOH to 50.00 mL of the buffer? Ka(HCO2H) = 1.800e-4. Note: only a portion of the original buffer is used in the second part of the problem.
Illustrate structures to prove your interpretation.
Draw its lewis structure, with the lone pair electrons, with the formal charges minimized? NO4 3-
A 25.00 mL sample of sulfuric acid (H2SO4) REQUIRED 21.26 mL of 0.124 mL N NaOH to titrare it to the endpoint.
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A white precipitate is observed to form. (a) Write the full ionic equation for the chemical reaction including spectator ions: (b) Write the net ionic equation. (c) Write the name of the white solid
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Titration of the newly freed EDTA required 18.0 mL of 0.0210 M Ca2 . What were the molarities of Cd2 and Mn2 in the original solution?
A cylinder contains 250 g of Helium at 200 K. The external pressure is constant at 1 atm. There is an increase in temperature of 56 K. Calculate the heat lost or gained by the system in response to this change in the external temperature.
when solid sodium bicarbonate is placed on an acetic acid solution they react to form water carbon dioxide and sodium
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Calculate the boiling point (in degrees C) of a solution made by dissolving 1.73 g of naphthalene {C10H8} in 67.1 g of benzene. The Kbp of the solvent is 2.53 K/m and the normal boiling point is 80.1 degrees C.
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