Chemical Equations

Hi, can someone tell me why the answer to this question is C?

Propanoic acid is a monoprotic acid.
Screenshot 2023-04-27 at 11.09.41 PM
Magnesium is a Group 2 metal.
Which of the following chemical equations is correct for the reaction between magnesium carbonate and propanoic acid?

A 2CH3CH2COOH + MgCO3 → Mg(C3H5O2)2 + H2O
B C3H6O2 + MgCO3 → MgC3H5O2 + CO2 + H2O
C 2C3H6O2 + MgCO3 → Mg(C3H5O2)2 + CO2 + H2O
D 2CH3COOH + MgCO3 → Mg(CH3COO)2 + CO2 + H2O
E C3H6O2 + 3MgCO3 → Mg3C3O2 + 3CO2 + 3H2O

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You could just know that carboxylic acid + carbonate = salt + H2O + CO2 and then balance the stochiometric numbers to find the solution
Or eliminate answers:
A ) wrong the stochio balance is off, 7C on the left and 6C on the right
B )wrong MgC3H5O2 should have a + charge
D ) wrong CH3COOH is ethanoic acid not propanoic acid
E ) wrong Mg3C3O2 is not possible unless you change the charge and add hydrogen

Hope this helps!


Now I got it! Thank you so much

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