"CaCO_3 + 2HCl \\rightarrow CaCl_2 + H_2O + CO_2" (equation 1)
aa
"NaOH + HCl \\rightarrow NaCl + H_2O" (equation 2)
"n(HCl)_ {total} = c\\times V = 0.0981\\times 0.025 = 0.00245 mol"
"n(NaOH) = c\\times V = 0.104\\times 0.00583 = 0.000606 mol"
"n(HCl)_{titration} = n(NaOH) = 0.000606 mol"
Find moles of HCl used for the reaction 1:
"n(HCl) = n(HCl)_{total} - n(HCl)_{titration} = 0.00245 - 0.000606 = 0.00184 mol"
Find moles of CaCO3 (equation 1) :
"n(CaCO_3) = \\frac{n(HCl)}{2} = \\frac{0.00184}{2} = 0.000922 mol"
a) Find mass of CaCO3 ;
"m(CaCO_3) = n\\times M = 0.000922\\times 100.09 = 0.0923 g"
b) Find percent active ingrdient
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