What is the total volume of the mixture of hydrogen gas and oxygen gas can be obtained from the electrolysis of 130.0 grams of water at 25.0°C and 1.00 atm pressure according to the chemical equation shown below? 2 H₂O(l)→ 2 H₂(g)+ O₂(g) A) 88.3 L B) 176 L C) 265 L D) 529 L

Question

Quizplus · Accepted Answer

The molar mass of water is 18.0 g/mol, so 130.0 g of water is 7.22 mol. From the balanced equation, 2 moles of water produce 3 moles of gas (2 moles of H2 and 1 mole of O2). Therefore, 7.22 moles of water produce 10.83 moles of gas. Using the ideal gas law (PV=nRT), with R=0.0821 L·atm/mol·K and T=298 K, the volume is approximately 265 L.

What Is the Total Volume of the Mixture of Hydrogen