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Consider the titration of 50.0 mL of 0.450 M C5H11N(aq), piperidine solution (Kb = 1.3 x 10-3), with 0.350 M HNO3(aq).
What is the pH of the solution when 15.0 mL of 0.350 M HNO3(aq) is added?
Calculate the pH of the solution at the halfway point of the titration.
Determine the pH of the solution at the equivalence point of the titration.
What is the pH of the solution when 70.0 mL of 0.350 M HNO3(aq) is added?
Describe an appropriate indicator for detecting the end point of this particular titration.
2 Al2O3(s) → 4 Al(s) + 3 O2(g) . ?H = +3339.6 kJ/mol What is ?H for the formation of one mole of Al2O3(s) from the elements?
given this equation 2C4H10+13O2 yield 8CO2+10H2O how many moles of carbon dioxide is porduced from 3.85 moles of butane?
A solution of iodine was standardized with ascorbic acid. A 0.1150 g sample of ascorbic acid required 28.37 mL of I2 to reach a starch end point. Calculate the molarity of the iodine solution.
In combustion studies of the use of H2 as an alternative fuel, HO is sometimes formed in flames by the reaction, H(g) + 1/2 O2(g) HO(g) Use the data below to calculate the value of Kc
The Al2O3 does not react. If the sample residue weighs 2.675 g, what is the mass fraction of Fe2O3 in the original sample?
Compute the Ka for the acid if the pH of the resulting solution = 6.36. and determine the pH of the resulting buffer
During a quirky promotion by a discount sporting goods store, golf balls were given away free when purchasing Ping-Pong balls in bulk. An equal mass of golf balls was given away based on the mass of ping
The H+ concentration of a 1 M solution of benzoic acid is 8x10^-3 M. What percent of the benzoic acid, C6H5COOH is ionized in this aqueous solution?
Calculate the amount of heat required to heat a 3.8kg gold bar from 27 degree celsius to 63 degree celsius.
At 600 degrees C, the equilibrium constant for the reaction 2HgO(s) --> 2Hg (l) +O2 (g) is 2.8. Calculate the equilibrium constant for the reaction 1/2O2(g) + Hg(l) --> HgO (s)
Starting with Benzyl alcohol (PhCH2OH) and any other organic or inorganic reagents outline a series of reactions leading to ethyl
The reaction of 2.5g of Al with 2.5g oxygen (actually) produces 3.5g of Al oxide. Calculate the % yield of aluminium oxide.
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