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titative Preparation of sodium chloride ite the balanced equation for the betwee

ID: 511645 • Letter: T

Question



titative Preparation of sodium chloride ite the balanced equation for the between NaHco, and HcL reacti n NaCl mental Data and Caleulati Record all measur t to the nearer g, temember to use the proper number of nificant figures in all ealculation sign e number has only owe significant figure empty evaporating dish Mass .3049 Mass ofevnpornting dish and dry NaHCoa Mass of evapornting dish Nnd Proitaet Nacil after first heating SO orevsparating diah and Product (Naco after second 30.3 heating Maas oesodium bliearbonate Experimental mate of endiam chloride obtained (from your datal 30.3 -23, y tal males of sodium chloride obtained Experime show calaukitiri setup o- o 271 Mole s

Explanation / Answer

Balance reaction between NaHCO3 and HCl is : NaHCO3 + HCl = NaCl + CO2 + H2O

1 mol of naCl is formed from 1 mol NaHCO3

moles of NaHCO3 used = 1.75 gm/ 84g/mol = 0.021 moles

Theoretical moles of NaCl = 0.021 moles

Theoretical mass of NaCl = 0.021 mol * 58.5g/mol = 1.23 gm

Amount of NaCl obtained = 1.63 gm

% error = { I theoretical value- experimental value I/ theoretical value } * 100 % = 32.5 %