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saw5 [17]
3 years ago
6

The main acid in the stomach is hydrochloric acid (HCl). Which chemical equations show a reaction that occurs when someone takes

an antacid? Check all that apply.
HCl + NaOH ->NaCl + H2O
2HCl + CaCO3 -> CaCl2 + CO2 + H2O
2HCl + Mg(OH)2 -> MgCl2 + 2H2O
6HCl + 2Al -> 2AlCl3 + 3H2
HCl + NaHCO3 -> NaCl + H2O + CO2
Chemistry
2 answers:
777dan777 [17]3 years ago
7 0
I think the correct answer would be HCl + NaHCO3 -> NaCl + H2O + CO2, 2HCl + CaCO3 -> CaCl2 + CO2 + H2O, 2HCl + Mg(OH)2 -> MgCl2 + 2H2O. Hydrochloic acid would react with the basic substances in the stomach which are magnesium hydroxide, sodium bicarbonate and <span>calcium carbonate.</span>
frez [133]3 years ago
3 0

Answer:

The answers are 2, 3, and 5.

Explanation:

Thank the person above C:

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What is the ph of a buffer prepared by adding 0.809 mol of the weak acid ha to 0.608 mol of naa in 2.00 l of solution? The disso
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The strength of any acid solution can be obtained by determining their pH. Even the buffer solution strength of the weak acid can be determined using pH. As the dissociation constant is given, we can determine the pKa value as the negative log of dissociation constant value.

pKa=-log[H] = - log [ 5.66 * 10^{-7}]\\ \\pka = 7 - log (5.66)=7-0.753=6.247\\\\pka = 6.247

The pH of the buffer can be known as

pH = pK_{a} + log[\frac{[A-]}{[HA]}}]

The concentration of [A^{-}] = Moles of [A]/Total volume = 0.608/2 = 0.304 M\\

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pH = 6.247 + log [ 0.304/0.404]

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