Write balanced chemical equation for the reaction that occur between hydrochloric acid and magnesium carbonate.

Question

1)

A 6.54  sample of a mixture of magnesium carbonate and calcium carbonate is treated with excess hydrochloric acid. The resulting reaction produces 1.74  of carbon dioxide gas at 29  and 741  pressure.

2)

Write a balanced chemical equation for the reaction that occurs between hydrochloric acid and calcium carbonate.,

3)

Calculate the total number of moles of carbon dioxide that forms from these reactions.

Answer 1

2HCl + MgCO₃ ==> MgCl₂ + CO₂ + H₂O ... balanced equation

2HCl + CaCO3 ==> CaCl2 + CO2 + H2O ... balanced equation

Since you left out almost all of the units, I'm gonna have to guess at what they are.

Is that 1.74 mols of CO2 or 1.74 g of CO2 or 1.74 liters of CO2? Is that 29ºC and 741 mm Hg?

PV = nRT

n = PV/RT

n = (741 mm x 1 atm /760 mm)(1.74 L) / (0.0821 L atm/Kmol)(302K)

n = 0.0684 mols CO2