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A 25.00-mL sample of an unknown H3PO4 solution is titrated with a 0.100 M NaOH solution. The equivalence point is reached when 52.58 mL of NaOH solution is added. What is the concentration of the unknown H3PO4 solution? The neutralization reaction is:
H3PO4(aq) + 3 NaOH(aq) 3 H2O(l) + Na3PO4(aq).
What is the pH of 1.00 L of rainwater that has dissolved 5.47 mg of NO2? Assume that all of the NO2 has reacted with water to give nitric acid. list an example of a strong acid and write its balanced chemical reaction when placed in water.
Draw a complete electronic mechanism of the aldol product between benzaldehyde and acetophenone.
esters are normally unreactive toward sodium borohydride but they react readily with lithium aluminum hydride to
Ethyl acetate liquid (flask with ethyl acetate with the top cover with aluminium paper with small whole in the top and inserted inside hot water container) Was the vapor really "ideal". If not, how were calculations affected
a 50 ml solution containing NaBr was treated with excess AgNo3 to precipitate 0.2146g of AgBr. what is the molarity of NaBr in the solution.
A first order reaction has an activation energy of 59.2 kJ/mol and a frequency factor (Arrhenius constant) of 9.13 x 1013 sec -1. Calculate the rate constant at 26 oC.
Label each of the following reactions as exothermic or endothermic ("exo" or "endo"), and according to whether work is done on or by the system, or no work is done at all ("on", "by" or "none")
Why don't we observe the deBroglie wavelength of everyday macroscopic objects (such as a moving car or a thrown baseball)? The wavelength is too small relative to the size of macroscopic objects to be observed.
At 25C, what is the hydroxide ion concentration, [OH-], in an aqueous solution with a hydrogen ion concentration of [H+]=2.7 x 10 ^ -6 M
He finds that the total pressure at equilibrium is 40% greater than it was originally. What is Kc for this reaction?
Which atom in each of the following pairs has a larger radius. (a) Na or K (b) V or Ta (c) V or Zn (d) Li or Ba
What is the molar composition of the vapor in equilibrium with a boling liquid that has a composition of 60% A and 40% B
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