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If 32 ml of 7.0 m h2so4 was spilled, what is the minimum mass of nahco3 that must be added to the spill to neutralize the acid?

Respuesta :

barnuts

The complete balanced reaction of this neutralization reaction is:

 H2SO4  +  2NaHCO3  -->  2CO2  +  2H2O  +  Na2SO4

 

Then we calculate the moles of H2SO4 that was spilled:

 moles H2SO4 = 7 mole/L * 0.032 L = 0.224 mole

 

From the reaction, we see that 2 moles of NaHCO3 is required for every mole of H2SO4, hence:

 moles NaHCO3 = 0.224 * 2 = 0.448 mole

 

The molar mass of NaHCO3 is 84 g/mol. Hence the mass is:

mass NaHCO3 = 0.448 * 84

mass NaHCO3 = 37.632 grams