Asked by Johnny

how many moles of hydrogen chloride would be needed to react completely with 15g of barium carbonate

equation is given:
BaCO3 + 2HCl to BaCl2 + H2O + CO2
Answered by DrBob222
Convert 15 g BaCO3 to moles. moles = grams/molar mass

Using the coefficients in the balanced equation, convert moles BaCO3 to moles HCl.
Answered by Margaret
it would take 30 grams of HCl to react completely with BaCO3, since it's a 1 to 2 ratio

30 grams of HCl = 1 mole/36 grams

so it's .83 moles of HCl
Answered by DrBob222
Margaret gets an A for trying but an F for the answer. Chemicals react by moles, not by grams; therefore, it will NOT take 30 grams HCl nor will it take 0.83 moles HCl. The statement about it being a 1:2 ratio is correct.
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