The characteristic odor of pineapple is due to ethyl butyrate, a compound containing carbon, hydrogen, and oxygen. combustion of 3.61 mg of ethyl butyrate produces 8.22 mg of co2 and 3.35 mg of h2o. what is the empirical formula of the compound
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Answer:
Empirical Formula = C₃H₆O₁
Solution:
Data Given:
Mass of Ethyl Butyrate = 3.61 mg = 0.00361 g
Mass of CO₂ = 8.22 mg = 0.00822 g
Mass of H₂O = 3.35 mg = 0.00335 g
Step 1: Calculate %age of Elements as;
%C = (mass of CO₂ ÷ Mass of sample) × (12 ÷ 44) × 100
%C = (0.00822 ÷ 0.00361) × (12 ÷ 44) × 100
%C = (2.277) × (12 ÷ 44) × 100
%C = 2.277 × 0.2727 × 100
%C = 62.09 %
%H = (mass of H₂O ÷ Mass of sample) × (2.02 ÷ 18.02) × 100
%H = (0.00335 ÷ 0.00361) × (2.02 ÷ 18.02) × 100
%H = (0.9279) × (2.02 ÷ 18.02) × 100
%H = 0.9279 × 0.1120 × 100
%H = 10.39 %
%O = 100% - (%C + %H)
%O = 100% - (62.09% + 10.39%)
%O = 100% - 72.48%
%O = 27.52 %
Step 2: Calculate Moles of each Element;
Moles of C = %C ÷ At.Mass of C
Moles of C = 62.09 ÷ 12.01
Moles of C = 5.169 mol
Moles of H = %H ÷ At.Mass of H
Moles of H = 10.39 ÷ 1.01
Moles of H = 10.287 mol
Moles of O = %O ÷ At.Mass of O
Moles of O = 27.52 ÷ 16.0
Moles of O = 1.720 mol
Step 3: Find out mole ratio and simplify it;
C H O
5.169 10.287 1.720
5.169/1.720 10.287/1.720 1.720/1.720
3.00 5.98 1
3 ≈ 6 1
Result:
Empirical Formula = C₃H₆O₁
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[H+] = [ ? ] x 10!?)
Coefficient (green)
Exponent (yellow)
Enter
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Solution:
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Wine is a homogenous mixture while beef stew is a heterogeneous mixture as it has components which are clearly visible.
What are the heterogeneous mixtures?
Heterogenous mixtures is defined as a type of mixture where in the composition is not uniform throughout the mixture.It consists as two or more phases. The phases are chemically distinct from each other.
As there are two or more phases present in heterogenous mixtures they can be separated by solvent extraction where in one phase is miscible with the solvent and the other phase is immiscible.
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2. become covalent.
3. form an insoluble solid.
4. conduct current.
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A soluble ionic compound in aqueous form will be able to 4. conduct current
An aqueous ionic compound is able to conduct current because:
- They possess charged ions
- They are able to move around
As a result of being able to move around in a solution, the ions of aqueous compound will be able to carry electricity from one point to another and so will be able to conduct electricity.
In conclusion, aqueous solutions of ionic compounds can conduct current.
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Answer:
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(b) NO
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Can anyone explain this?