the combustion of 17.41 grams of a compound known to only contain carbon, hydrogen, and oxygen produced 25.61 grams of carbon di
1 answer:
The compound which on combustion produces Carbon-di-oxide and water is carbohydrates.
- Percentage of Carbon = 6.98 / 17.41 x 100 = 40 %
- Percentage of Hydrogen = 15.08 / 17.41 x 100 = 86.61 %
- Percentage of Oxygen = 4.6 / 17.41 x 100 = 26.42 %
Those reaction in which the Crabon present in the reatctant gets reacted with oxygen and produces Carbon-di-oxide.
It is an Exothermic Reaction.
To find out the percentage of C, H and O, we must know about there weight in the product.
Given,
Total weight of compund [Reactant] = 17.41 grams
Weight of carbon dioxide [Product] = 25.61 grams
Weight of water [Product]= 10.48 grams
Now, we need to find out the weight of C,H and O in the products ;
- Mass of Carbon = No. of Moles x Atomic weight
No. of Moles of Crabon = x No. of C-atoms in molecule
No. of Moles of Crabon =25.61 / 44 = 0.58 x 1 = 0.58 moles
Mass of Carbon = 0.58 moles x 12 = 6.98 gm
- Mass of Hydrogen = No. of Moles x Atomic weight
No. of Moles of Hydrogen = x No. of H-atoms in molecule
No. of Moles of Hydrogen =10.48/ 18 = 0.58 x 2 = 1.16 moles
Mass of Hydrogen = 1.16 moles x 12 = 15.08 gm
- Mass of Oxygen = Total weight of compound - (Weight of C & H)
= 17.41 grams - ( 15.08 gm + 6.98 gm)
Mass of Oxygen = 4.6 gm
Now,
Percentage of atom = x 100
- Percentage of Carbon = 6.98 / 17.41 x 100 = 40 %
- Percentage of Hydrogen = 15.08 / 17.41 x 100 = 86.61 %
- Percentage of Oxygen = 4.6 / 17.41 x 100 = 26.42 %
Learn more about Percentage composition here ;
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Answer:
- The<em> diagram</em> with the five<em> labels</em> of the parts is in the image attached. Please, see the image.
Explanation:
<u>1) General explanation:</u> a <em>potential chemical energy diagram</em> is used to show how the <em>reactants</em> gain energy until they reach the <em>activation energy</em>, form the <em>activated complex</em>, and release part of the energy to form the <em>products</em>.
The difference between the chemical potential energy of the products and the reactants is the <em>enthalpy of the reaction</em>:
- ΔH rxn = ΔH products - ΔH reactants.
The labels that correspond to each part of the diagram are explained next.
<em><u>2) Reactants:</u></em>
This is the substances at the start, so they appear on the left bottom side of the diagram.
<em><u>3) Activation energy:</u></em>
It is the energy that the reactants must reach (the highest point) in order to the reaction occurs.
<u><em>4) Activated complex:</em></u>
This is the intermediate state and of highest energy. The reactants have formed a complex at mid way between the reactants and the products.
<u><em>5) Products:</em></u>
These are the substances formed when the reaction is completed. They are lower in energy than the activated complex. They can be either higher or lower in energy than the reactants. The products are shown to the right of the diagram.
<em><u>6) Enthalpy of the reaction:</u></em>
The enthalpy of the reaction is the difference in energy of the products and the reactants. In this case, since, the products are higher in energy, it means that the reaction absorbed energy and it is an endothermic reaction.
