Chem 171 F09 Q9 Antacid Metal Key

Chem 171 F09 Q9 Antacid Metal Key - Chem 171 Quiz 9 Version...

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Chem 171 Quiz 9 Version A (Antacid Metal Key) 1. What is the function of antacids? Why does taking sodium bicarbonate as an antacid cause the person to belch? Show molecular reaction. Show phases. The function of antacids is to neutralize excess HCl in the stomach NaHCO 3 (aq) + HCl (aq) Æ NaCl (aq) + H 2 O(l) + CO 2 (g) The CO 2 released increases the gas pressure in the stomach, causing the person to belch. 2. The following questions pertain to the experiment entitled “Reactivity of Metals”. What is the purpose of the experiment? What do chemistry rules state about mixing an acid and water? What is a eudiometer? What is Dalton’s Law of Partial Pressures? What are the precautions taken when working with hydrogen gas? The purpose of this experiment is to determine the equivalent mass of a metal. Chemistry rules state that an acid should always be added to water. A eudiometer is an instrument used to measure gas volumes. Dalton’s Law of Partial Pressures state that the total pressure is the sum of the partial pressures. Because of the inflammability of hydrogen gas, no flames of any type will be permitted in the laboratory. Chem 171 Quiz 9 Version B 1. Balance the following equations: Al(OH) 2 NaCO 3 (s) + HCl (aq) Mg(OH) 2 (s) + HCl(aq) MgCO 3 (aq) + HCl (aq) Al(OH) 2 NaCO 3 (s) + 4 HCl (aq) AlCl 3 (aq) + NaCl (aq) + 3H 2 O(l) + CO 2 (g) Mg(OH) 2 (s) + 2 HCl(aq) MgCl 2 (aq) + 2 H 2 O(l) MgCO 3 (aq) + 2HCl (aq) MgCl 2 (aq) + H 2 O(l) + CO 2 (g) 2. The following questions pertain to the experiment entitled “Reactivity of Metals”.
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This note was uploaded on 03/04/2012 for the course CHEM 171 taught by Professor Several during the Fall '08 term at Rutgers.

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Chem 171 F09 Q9 Antacid Metal Key - Chem 171 Quiz 9 Version...

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