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Calculate the concentrations of all species in a 0.530 M Na2SO3 (sodium sulfite) solution. The ionization constants for sulfurous acid are Ka1 = 1.4× 10-2 and Ka2 = 6.3× 10-8.
A. [Na+]= __ M
B. [SO3^-2]= __ M
C. [HSO3^-]= __ M
D. [H2SO3]= __ M
E. [OH-]= __M
F. [H+]= __ M
A 10.0 long cylindrical glass tube, sealed at one end, is filled with ethanol. The mass of ethanol needed to fill the tube is found to be 11.90 . The density of ethanol is 0.789 . what is the inner diameter of cylinder?
How much A would have been extracted into ether if the orginal aqueous solution had been extracted once with a 500-mL portion of ether? What percentage of A would have been extracted by the ether?
Calculate the experimental value for Ksp for KHP and determine whether it is within 10% of the theoretical Ksp value (solubility = 8.0g/L). If not, give one reason why this error might have occurred.
A sample of water vapour at 200 degrees C is compressed isothermally from 350 cm^3 to 120 cm^3. What is the change in its molar Gibbs
if molarity of a 2000ml solution is 4.0M NaCl, how many moles of NaCl are dissolved in that solution.
Calculate the pH of a buffer made with 0.50 M phosphoric acid and 0.75 M sodium dihydrogen phosphate. Ka = 7.5 x 10^-3
which compunds moves to the aqueous NaOH? Provide the chemical reaction that occured when NaOH was added. Clearly indicate the different between ionic bond and covalent bond.
redox reaction NO2- is oxidized to NO3 and Ag is reduced to Ag. Complete and balance the equation for this reaction in basic solution
25.0 mL of 1.50M LiOH are neutralized by 15.0mL of nitric acid. what is the molarity of HNO3?
A 5.00-L reaction vessel contains hydrogen at a partial pressure of 0.588 atm and oxygen gas at a partial pressure of 0.302 atm. Which element is the limiting reactant in the following reaction? 2H2(g) + O2 (g) -> 2H2O(g)
What are the active ingredients & determine what possible tests to perform to identify each active ingredient. (what is the expected result?) - can't use melting points, boiling points, burning of solids, benedict's solution and tasting.
Which of the following is/are an atom, an isotope and an ion?
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