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1. Write the reaction of phosphoric acid with sodium hydroxide: use only the first dissociation of the acid.
2. A student used 8.75ml of 0.05M NaOH to titrate 48.65mL of cola to the first equivalence point. (using a pH meter)
a. How many moles of NaOH were used?
b. How many moles of H3PO4 were in the cola sample?
c. What is teh concentration of H3PO4 in the cola sample?
3. Explain how you might do this same titration if you did not have a pH meter.
4. Why do you think that the sample titration curve of acetic acid titrated with NaOH would look different than a titration curve for the tirtration of phosphoric acid with NaOH?
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A certain second-order reaction () has a rate constant of 1.80×10-3 at 27 and an initial half-life of 216 . What is the concentration of the reactant after one half-life?
Calculate the pH of a buffer solution with .10 moles of C2H5COOH and .13 moles of C2H5COONa in 1.5L
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What volume of chlorine gas is produced when 0.952 mol of hydrochloric acid reacts completely according
Determine the molarity of Fe+3 ions and SO4-2 ions in a solution prepared by dissolving 48.05g of Fe2(SO4)3 in enough water to make 800.0mL of solution.
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Explain why it is preferable to take the geometric mean rather than the arithmetic mean when defining mean activity
1) How many moles of oxygen atoms are present in a sample that contains 3.86 moles of dioxygen difluoride O2F2? The answer I got from this was: 7.72 moles of O2 atoms?
A 343 mL container holds 0.146 g of Ne and an unknown amount of Ar at 35°C and a total pressure of 625 mmHg. Calculate the moles of Ar present.
Gold miners then react the basic aqueous product solution from part C with Zn dust to get gold metal. Write a balanced redox reaction for this process.
How much heat is produced by the complete combustion of 256 CH4 of ? CH4+2O2=CO2+2H2O Hrxn=-802.3kJ
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