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TEA [102]
3 years ago
8

In the reaction shown, 88.388.3 g salicylic acid, C7H6O3C7H6O3 , reacts with excess acetic anhydride, C4H6O3C4H6O3 , producing 6

2.062.0 g of aspirin, C9H8O4C9H8O4 . C7H6O3(s)+C4H6O3(l)⟶C9H8O4(s)+CH3CO2H(l) C7H6O3(s)+C4H6O3(l)⟶C9H8O4(s)+CH3CO2H(l) Calculate the percent yield of this reaction
Chemistry
1 answer:
Ulleksa [173]3 years ago
6 0

Answer:

53.9%

Explanation:

The equation of the reaction is;

C4H6O3+C7H6O3→C9H8O4+C2H4O2

Number of moles of salicyclic acid reacted = 88.3 g/138.121 g/mol = 0.639 moles

1 mole of salicyclic acid yields 1 mole of aspirin

0.639 moles of salicyclic acid also yields 0.639 moles of asprin

Theoretical yield of asprin = 0.639 moles * 180.158 g/mol

Theoretical yield of asprin = 115.12 g

Percent yield = Actual yield/Theoretical yield * 100/1

Percent yield = 62.0 g/115.12 g * 100

Percent yield = 53.9%

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Calculate the number of Cl atoms that are in 1.1 x 10^-21 moles of Cl atoms.
Margarita [4]

According to Avogadro's number there are 62.53 atoms of chlorine in 1.1x 10^-21 moles of Cl atoms.

<h3>What is Avogadro's number?</h3>

Avogadro's number is defined as a proportionality factor which relates number of constituent particles with the amount of substance which is present in the sample.

According to the definitions, Avogadro's number depend on determined value of mass of one atom of those elements.It bridges the gap between macroscopic and microscopic world by relating amount of substance with number of particles.

Number of atoms can be calculated using Avogadro's number as follows: mass/molar mass×Avogadro's number or number of moles×Avogadro's number.

ON substitution in above formula number of atoms=1.1×10²¹×6.023×10²³=62.53 atoms

Thus, there are 62.53 chlorine  atoms in 1.1x 10^-21 moles of Cl atoms.

Learn more about Avogadro's number,here:

brainly.com/question/11907018

#SPJ1

6 0
1 year ago
What 3 atoms make up the universe
jek_recluse [69]
Hydrogen, helium and oxygen
6 0
3 years ago
Water is placed in a graduated cylinder and the volume is recorded as 43.5 ml. a homogeneous sample of metal pellets with a mass
natulia [17]
Density = mass /volume of the body. mass = 10.88 g, volume of the liquid displaced= 49.4-43.5=5.9 ml.

density = 10.88/5.9=1.844 g/ml~1.84 g/ml

The volume displaced is exactly the same as that of the body (The Eureka fro Archimedes!)
7 0
3 years ago
How much heat is required, in calories, to raise the temperature of 57.8 g of silver from
Stella [2.4K]

Answer:

87.3 calories of heat is required.

Explanation:

Heat = mcΔT

m= mass, c = specific heat of silver, T = temperature

H= 57.8 g * 0.057 cal/g°C * ( 43.5 - 17 °C)

H = 57.8 * 0.057 * 26.5

H = 87.3069 cal.

The heat required to raise the temperature of 57.8 g of silver from 17 °C to 43.5 °C is 87.3 calories.

8 0
3 years ago
What is conserved in physical changes
nataly862011 [7]

Answer:

energy or density

Explanation:

8 0
4 years ago
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