2 HCOONa + H2SO4 ---> 2 CO + 2 H2O + Na2SO4
A 0.964 gram sample of a mixture of sodium formate and sodium chloride is analyzed by adding sulfuric acid. The equation for the reaction for sodium formate with sulfuric acid is shown above. The carbon monoxide formed measures 242 milliliters when collected over water at 752 torr and 22.0 °C. Calculate the percentage of sodium formate in the original mixture.
2007-01-14 14:50:02 · 1 answers · asked by mitu 2 in Science & Mathematics ➔ Chemistry
Use PV=nRT to calculate the # moles of CO.
The balanced equation shows you that the # moles CO is the same as # moles HCOONa.
Calculate mass of HCOONa from # moles. (1+12+16+16+23) = molar mass of HCOONa. Multiply this mass by the number of moles from above.
Calculte % by taking mass HCOONa calculated above and dividing it by the total mass (0.964 g).
2007-01-14 15:26:25 · answer #1 · answered by physandchemteach 7 · 0⤊ 0⤋