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Answer: After a few aspirin tablets have been swallowed, the concentration of acetylsalicylic acid in the stomach is 0.20 M. Calculate the percent ionization of the acid under these conditions. Therefore, the percent ionization is - X 100% = 3.8%.
Answer:
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<em>a) Balanced chemical equation:</em>
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<em>b) Theoretical yield:</em>
c) % yield:
Explanation:
The complete question is:
<em>In a particular reaction 6.80g of dinitrogen trioxide gas (N₂0₃) was actually produced by reacting 8.75g of oxygen gas (O₂) with excess nitrogen gas (N₂)</em>
<em>a) Write a balanced chemical equation for the reaction. Be sure to include physical states in the equation.</em>
<em>b) Calculate the theoretical yield (in grams) of dinitrogen trioxide: Use dimensional analysis</em>
<em>c) Calculate the % yield of the product</em>
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<h2>Solution</h2>
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<em>a) Write a balanced chemical equation for the reaction. Be sure to include physical states in the equation.</em>
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Check the balance:
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Atom Left-handside Right-hand side
N 2×2=4 2×2=4
O 3×2=6 2×3=6
- Mole ratio: it is the ratio of the coefficients of the balanced equation
![\dfrac{2molN_2O_3}{3molO_2}](https://tex.z-dn.net/?f=%5Cdfrac%7B2molN_2O_3%7D%7B3molO_2%7D)
<em>b) Calculate the theoretical yield (in grams) of dinitrogen trioxide: Use dimensional analysis</em>
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<u>1. Convert 8.75 g of O₂(g) to number of moles</u>
- number of moles = mass in grams / molar mass
- molar mass of O₂ = 15.999g/mol
- number of moles = 8.75g / 15.999 g/mol = 0.5469 mol O₂
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<u>2. Use dimensional analysis to calculate the maximum number of moles of N₂O₃(g) that can be produced</u>
![\dfrac{2molN_2O_3}{3molO_2} \times 0.5469molO_2=0.3646molN_2O_3](https://tex.z-dn.net/?f=%5Cdfrac%7B2molN_2O_3%7D%7B3molO_2%7D%20%5Ctimes%200.5469molO_2%3D0.3646molN_2O_3)
<u>3. Convert to mass in grams</u>
- mass = number of moles × molar mass
- molar mass of N₂O3 = 76.01g/mol
- mass = 0.3646mol × 76.01g/mol = 27.7g N₂O3
<em>c) Calculate the % yield of the product</em>
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Formula:
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- %yield = (actual yield/theoretical yield)×100
Substitute and compute:
- % yield = (6.80g/27.7g)×100 = 24.5%
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Answer: 2.78 L
Explanation:
Given that,
Original volume V1 = 1.2 L
Original pressure P1 = 5.1 kPa
New pressure P2 = 2.2 kPa
New volume V2 = ?
Since pressure and volume are given while temperature is constant, apply the formula for Boyle's law
P1V1 = P2V2
5.1 kPa x 1.2L = 2.2 kPa x V2
6.12 kPa L = 2.2 kPa x V2
V2 = 6.12 kPa L / 2.2L
V2 = 2.78 L
Thus, the new volume of the gas would be 2.78 Liters