An antacid tablet contains 640.0 mg of magnesium oxide per tablet.What volume of 0.1000 M stomach acid (HCI) could one tablet neutralize?​

1 answer
Question:

An antacid tablet contains 640.0 mg of magnesium oxide per tablet.
What volume of 0.1000 M stomach acid (HCI) could one tablet neutralize?​

Answers

Answer:317.6 mLExplanation:Step 1: Write the balanced neutralization equationMgO + 2 HCl ⇒ MgCl₂ + H₂OStep 2: Calculate the mass corresponding to 640.0 mg of MgOThe molar mass of MgO is 40.30 g/mol. The moles corresponding to 640.0 mg (0.6400 g) of MgO are:0.6400 g × (1 mol/40.30 g) = 0.01588 molStep 3: Calculate the moles of HCl that react with 0.01588 moles of MgOThe molar ratio of MgO to HCl is 1:2. The moles of HCl are 2/1 × 0.01588 mol = 0.03176 molStep 4: Calculate the volume of 0.1000 M HCl that contains 0.03176 moles0.03176 mol × (1 L/0.1000 mol) = 0.3176 L = 317.6 mL

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