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Is the pH of 100 mL of an aqueous solution containing substantial and approximately equal con- centrations of sodium hydrogensulfite and sodium sulfite closest to a pH of 2, 3, 4, 5, 6, 7, 8, 9, 10, none of these, or cannot be determined? Justify your choice. Ka1 = 1.3 x 10-2 and Ka2 = 6.2 x 10-8 for sulfurous acid.
He is heated until the pressure reaches 3.50 atm. What is the final temperature in degrees Celsius
How much of the 37.0% HCl concentration stock do you need to prepare this solution?
10 ml of .1 M phosphoric acid is titrated with .1M NaOH. After 10 ml of NaOH has been added the pH is 4 What is the ratio of H3PO4/H2PO4 - at this point
Identify the acid and base on the left side of the following equations and identify their conjugate species on the right side
What is the molecular equation, total ionic equation, and net ionic equation for the reaction of Pb(NO3)2 and HCl
Which of the following reasons is most important in explaining why butanol, CH3CH2CH2CH2OH , has a higher boiling point than butane, CH3CH2CH2CH3. 1.Butanol molecules are subjet to dipole-dipole forces
A cook wants to heat 1.35 of water from 32.0 to 100.0 .If he uses the combustion of natural gas (which is exothermic) to heat the water, how much natural gas will he need to burn.
Find the pH of the equivalence points and the volume of 0.0372 M NaOH needed to reach it in titrations of
constant current of 101.0{\rm A} is passed through an electrolytic cell having an impure copper anode, a pure copper cathode, and an aqueous {\rm CuSO_4} electrolyte.
What mass of benzoic acid, would you dissolve in 300.0 of water to produce a solution with a = 2.75?
If an excess of ammonia is added to the solution, solid [Cu(NH3)4]SO4xH20 (molar mass = 245.61 g/mol) forms. What is the theoretical yield of product from the reaction?
Herbigon will be soluble at the concentration needed to kill weeds. What pH must the solution have to yield a solution in which the concentration of X+ is 6.00×10?3M ? The pKa of acetic acid is 4.76.
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