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Sunny_sXe [5.5K]
3 years ago
11

A student measures out exactly 0.0970 g of salicylic acid and carries out an aspirin synthesis using salicylic acid, acetic anhy

dride, heat, and an acid catalyst. Salicylic acid is the limiting reagent in this reaction, which yields 0.1030 g of aspirin. What is the percent yield for the reaction?
Chemistry
1 answer:
9966 [12]3 years ago
5 0

Answer: 106.19%

Explanation:

percent yield = actual/theo * 100%

our theoretical yield is the limiting reagent and then we have our actual given

.1030/.0970* 100% = 106.19%

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An apparatus consists of a 3 L flask containing nitrogen gas at 17◦C and 822 kPa, joined by a valve to a 10 L flask containing arg
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Answer:

a) 189.7 kPa

b) 45.4 kPa

c) 235 kPa

Explanation:

After the mixture, the temperature must remain the same, because both gases are at 17°C. Besides, the gases will not react because both nitrogen and argon are non-reactive. So, the partial pressure can be calculated by Boyle's Law:

P1*V1 = P2*V2

Where P is the pressure, V is the volume, 1 is the initial state, and 2 the final state.

When the valve is opened, the gases mix and occupy all the two vases. So, V2 = 13 L.

a) For nitrogen, P1 = 822 kPa, V1 = 3L, V2 = 13 L

822*3 = P2*13

P2 = 189.7 kPa

b) For argon, P1 = 59 kPa, V1 = 10 L, V2 = 13 L

59*10 = P2*13

P2 = 45.4 kPa

c) By Dalton's law, the total pressure of a gas mixture is the sum of the partial pressures of the components, so:

P = 189.7 + 45.4

P = 235 kPa

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What's the purpose of mitosis and meiosis?
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