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Suppose that 0.263g of NaCO3 required 38.35mL of aqueous HCl for titration to the equivalence point. What is the molar concentration of the acid?
NaCO3(aq) + 2HCl(aq) -> 2NaCl(aq) + H2O(l) + CO2(g)
Write a balanced equation for the acid-base reaction between benzoic acid and KOH. Using a pKa table, predict which way the equilibrium is favored.
Construct flow diagrams to show how to separate each of the following pairs of water-insoluble compounds
Aqueous sulfuric acid reacts with solid sodium hydroxide to produce aqueous sodium sulfate and liquid water. If 1.92 g of sodium sulfate is produced from the reaction of 4.9 g of sulfuric acid and 7.8 g of sodium hydroxide, calculate the percent y..
A 1.000g sample of red phosphorus powder was burned in air and reacted with oxygen gas to give 2.291g of phosphorus oxide. Calculate the empirical formula & molecular formula of phosphorus oxide given the molar mass is approximately 282 g/mol
Determine the pH of an aqueous solution of CaCO3 that contains 1.7*10^-6 M of hydroxide ion [OH^-].
Calculate the pH of a buffer solution obtained by dissolving 20.0 g of KH2PO4(s) and 30.0 g of Na2HPO4(s) in water and then diluting to 1.00 L.
Sodium-24 is used to treat leukemia and has a half-life of 15 hours. A patient is injected with a salt solution containing sodium-24. What percentage of the 24Na remained after 48 hours
Write a reaction (a single reaction, an overall reaction, if you like, for the reaction of chlorine gas with methane to produce carbon tetrachloride.
one biochemical reaction has a standard gibbs energy of-200kjmol and a second biochemical reaction has a standard
explain why covalent bonds are formed when non metals from the right side of the periodic table bond with each other. Give two examples of such compounds.
the atomic spacing in rock salt nacl is 0.282 nm. find the kinetic energy in ev of a neutron with a de broglie
Air is 21 mole percent oxygen, that is, 0.21 atm oxygen at 1 atm. Suppose the pH of the water is 5.91 and that the concentration of iron(II) in the water is 3.29x 10-5 M, what is the potential of the corrosion reaction under the above conditions a..
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