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antiseptic1488 [7]
3 years ago
6

Which equation agrees with the ideal gas law? mc005-1.jpg mc005-2.jpg mc005-3.jpg mc005-4.jpg

Chemistry
2 answers:
AlexFokin [52]3 years ago
7 0
The ideal gas equation is pV = nRT


From that you can derive several equations, depending on which variables are fixed.


1) When n and T are fixed:

pV = nRT = constant


pV = constant => p1 V1 = p2 V2 => p1 / V2 = p2 / V1 ---> Boyle's Law


2) When n and V are constant:


p / T = nR/V = constant


p / T = constant => p1 / T1 = p2 / T2  ----> Gay - Lussac's Law


3) when n and p are constant


V / T = nR/p = constant   


V / T = constant => V1 / T1 = V2 / T2 ---> Charles' Law


4) When only n is constant


pV / T = nR = constant


pV / T = constant => p1 V1 / T1 = p2 V2 / T2 ----> Combined gas law.



There  you have the four equations that agree with the ideal gas law.  
Yuliya22 [10]3 years ago
3 0

Answer:

V1/T1=V2/T2

v1/n1=v2/n2

P1V1=P2V2

P1/T1=P2/T2

Explanation:

its right on edg.

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Answer:

The percent yield would be 73%

Explanation:

The balanced reaction for the obtention of acetylsalicylic acid (aspirin) is the following:

Salicylic acid + acetic anhydride → acetylsalicylic acid + acetic acid

C₇H₆O₃          +          C₄H₆O₃        →         C₉H₈O₄           +    C₂H₄O₂

According to the reaction, 1 mol of salicylic acid reacts with 1 mol of acetic anhydride to give 1 mol of acetylsalicylic acid (aspirin) and 1 mol of acetic acid.

1 mol aspirin (C₉H₈O₄) = (9 x 12 g/mol) + (8 x 1 g/mol) + (4 x 16 g/mol)

                                     = 180 g

1 mol salicylic acid (C₇H₆O₃) = (7 x 12 g/mol) + (6 x 1 g/mol) + (3 x 16 g/mol)

                                              = 138 g

1 mol acetic anhydride (C₄H₆O₃) = (4 x 12 g/mol) + (6 x 1 g/mol) + (3 x 16 g/mol)

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The stoichiometric ratio is = 138 g salicylic acid/102 g acetic anhydride= 1.35

We have:

2.0 g salicylic acid

acetic anhydride = 5.0 mL x 1.08 g/mL = 5.4 g

The reactants ratio is = 2.0 g salicylic acid/5.4 g acetic anhydride = 0.37

0.37 < 1.35 , therefore <em>salicylic acid is the limiting reactant</em>.

Now, we use the amount of salicylic acid to calculate the theoretical amount of aspirin. For this, we know that 1 mol of aspirin (180 g) is obtained from 1 mol of salycilic acid (138 g):

theoretical yield= 180 g aspirin/138 g salycilic acid x 2.0 g salycilic acid = 2.61 g aspirin

actual yield = 1.9 g

Finally, we calculate the yield:

percent yield = actual yield/theoretical yield x 100

        = 1.9 g/2.6 g x 100 = 72.8% ≅ 73%

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