chemistry

posted by .

In the lab, 20.0 g of sodium hydroxide is added to a beaker giving it a total mass of 128.4 g. Sulfuric acid is added until all of the sodium hydroxide reacts. After heating, the total mass of the beaker and the dry compound is 142.3 g. Caculate the percent yeild.

2NaOH + H2SO4 ==> Na2SO4 + 2H2O


Convert 20.0 g NaOH to mols NaOH.

Convert mols NaOH to mols Na2SO4 using the coefficients in the balanced equation above.

Convert mols Na2SO4 to grams Na2SO4 using mols x molar mass = grams. This value is the theoretical yield (in grams)

%yield = (A/T)*100
where A = actual mass Na2SO4 collected.
T = theoretical yield.

Post your work if you get stuck and need further assistance.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. plz help now, chemistry

    How do you write chemical formulas? For example how so you right a chemical formula for calcium fuoride?
  2. Chemistry

    A .288 g sample of an unknown monoprotic organic acid is dissolved in water and titrated with a .115 M sodium hydroxide solution. After the addition of 17.54 mL of base, a pH of 4.92 is recorded. The equivalence point is reached when …
  3. Chemistry

    The solubility of compounds containing the carboxylic acid group can be increased by reaction with a) sulfuric acid b) nitric acid c) sodium hydroxide d) water e) benzoic acid Would it be sodium hydroxide since it is a base?
  4. chem

    Some sulfuric acid is spilled on a lab bench. It can be neutralized by sprinkling sodium bicarbonate on it and then mopping up the resultant solution. The sodium bicarbonate reacts with sulfuric acid as follows. 2 NaHCO3(s) + H2SO4(aq) …
  5. chemistry

    an impure sample of oxalic acid C2O4H2, with a mass of 0.465g, is dissolved in water. a few drops of phenolphthalein indicator solution are added, and the solution is titrated with 0.190 mol/L aqueous sodium hydroxide held in a burette. …
  6. Titrations (chem)

    In the titration of a 0.101 M sodium hydroxide solution, 19.02 mL of 0.130 M sulfuric acid solution was required to neutralize the sodium hydroxide in reactions that replace both hydrogen ions of the sulfuric acid. Calculate the number …
  7. Chemistry

    Aqueous sulfuric acid H2SO4 will react with solid sodium hydroxide NaOH to produce aqueous sodium sulfate Na2SO4 and liquid water H2O . Suppose 31. g of sulfuric acid is mixed with 11.5 g of sodium hydroxide. Calculate the maximum …
  8. Chemistry

    You want to neutralize 6 mol of sulfuric acid with 6.0 M sodium hydroxide. How much 6.0 M sodium hydroxide must you add to react exactly with the sulfuric acid?
  9. Chemistry

    You want to neutralize 6 mol of sulfuric acid with 6.0 M sodium hydroxide. How much 6.0 M sodium hydroxide must you add to react exactly with the sulfuric acid?
  10. Chemistry

    A 50.0 mL aqueous solution of sodium hydroxide has a pH of 12.50. If 36.00 ml of 0.0200 mol/L sulfuric acid is added to this sodium hydroxide solution, what will be the new pH of the resulting solution?

More Similar Questions