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What mass of hydrochloric acid (in grams) can be neutralized by 2.2 g of sodium bicarbonate?...

What mass of hydrochloric acid (in grams) can be neutralized by 2.2 g of sodium bicarbonate? (Hint: Begin by writing a balanced equation for the reaction between aqueous sodium bicarbonate and aqueous hydrochloric acid.)

Solutions

Expert Solution

The reaction between hydrochloric acid & sodium bicarbonate is :

HCl + NaHCO3 NaCl + H2O + CO2

Molar mass of HCl is = At.mass of H + At.mass of Cl

                              = 1+35.5

                              = 36.5 g/mol

Molar mass of NaHCO3 = At.mass of Na + At.mass of H + At.mass of C + (3xAt.mass of O)

                                   = 23+1+12+(3x16)

                                   = 84 g/mol

According to the balanced equation ,

1 mole of HCl reacts with 1 mole of NaHCO3

                               OR

1x36.5 g of HCl reacts with 1x84 g of NaHCO3

M g of HCl reacts with 2.2 g of NaHCO3

M = (36.5x2.2) / 84

   = 0.96 g

Therefore the mass of HCl required is 0.96 g

queen_honey_blossom answered 3 years ago
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