Consider a buffer made by dissolving 0.140 mol cyanic acid, HCNO, and 0.11 mol potassium cyanate, KCNO, in enough water to make a 1-L solution. Assuming that the volume does not change, what is the pH of the buffer before any acid or base is added? Ka = 3.5 x 10-4 O 3.46 O 3.25 3.36 O None of the above

Q: NAMING OF ALKANES AND ALKYNES

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Q: NAMING OF ALKANES AND ALKYNES

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Q: A certain reaction has ∆?°= -19.5KJ and ∆S°= 42.7 J/K, is the reaction exothermic or endothermic?

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Q: Why does the Hartree-Fock method still have errors in energy calculations for many-electron atoms ?

A: To explain why Hartree-Fock method have errors in energy calculations for many-electrons atoms.

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Q: What is the net ionic equation for Ba(NO3)2 + H2SO4 —> BaSO4 + HNO3

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Q: a Cl -CH ₂ CH 3

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Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.