Answer to Question #171816 in Chemistry for Asmau

Question

Assuming that 1.0g of nahco3 is reacted with excess hcl and completely converted to nacl calculate the mass of nacl obtained

Answer 1

NaHCO₃ + HCl = NaCl + H₂CO₃

According to the equation, n (NaHCO₃) = n (NaCl).

n = m/M

m = n x M

M (NaHCO₃) = 84.007 g/mol

M (NaCl) = 58.44 g/mol

n (NaHCO₃) = 1 / 84.007 = 0.012 mol

m (NaCl) = 0.012 x 58.44 = 0.7 g