A 10 mg effervescent tablet releases 0.25 mL of at 298.15 K and 1 bar (molar volume=25.0 L). What is the percentage of in the tablet? []

Question

A 10 mg effervescent tablet releases 0.25 mL of  at 298.15 K and 1 bar (molar volume=25.0 L). What is the percentage of  in the tablet? []

Canvas Classes · Accepted Answer

Strategy:
 Effervescent tablets produce  (usually from Sodium Bicarbonate). Find the moles of  released, equate it to the moles of  ( ratio), and calculate its weight relative to the tablet mass.

Step 1: Calculate moles of } \ce{CO2}
Molar volume at  and .

Step 2: Calculate mass of } \ce{NaHCO3}
Moles of .
Mass .

Step 3: Calculate percentage

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