➣ The combustion reaction is a reaction where the oxygen reacts with a compound formed by carbon and hydrogen. Its products are carbon dioxide and water when the combustion is complete. ➣ The molecular weight (MW) can be defined in the following way, MW= ∑ n i A i Where n i is the number of atoms of element i that form the molecule and A i is the atomic weight of element i. ➣ The stoichiometric coefficients show the reactants proportions that are transformed and the products proportions that are produced. ➣ The molar ratio can be used to relate: The moles of product formed from of certain moles of reactant. The moles of reactant needed to form certain moles of a product. The moles of a reactant needed to react with certain moles of a second reactant.
➣ The combustion reaction is a reaction where the oxygen reacts with a compound formed by carbon and hydrogen. Its products are carbon dioxide and water when the combustion is complete. ➣ The molecular weight (MW) can be defined in the following way, MW= ∑ n i A i Where n i is the number of atoms of element i that form the molecule and A i is the atomic weight of element i. ➣ The stoichiometric coefficients show the reactants proportions that are transformed and the products proportions that are produced. ➣ The molar ratio can be used to relate: The moles of product formed from of certain moles of reactant. The moles of reactant needed to form certain moles of a product. The moles of a reactant needed to react with certain moles of a second reactant.
Definition Definition Number that is expressed before molecules, ions, and atoms such that it balances out the number of components present on either section of the equation in a chemical reaction. Stoichiometric coefficients can be a fraction or a whole number and are useful in determining the mole ratio among the reactants and products. In any equalized chemical equation, the number of components on either side of the equation will be the same.
Chapter 4, Problem 4.18PAE
xInterpretation:
The gas (CH4 or C2H6) that produces 1.80 g of water when 1.00 -g of this gas is combusted in excess O2 has to be determined. Assuming complete combustion.
Interpretation Introduction
Concept Introduction:
➣ The combustion reaction is a reaction where the oxygen reacts with a compound formed by carbon and hydrogen. Its products are carbon dioxide and water when the combustion is complete.
➣ The molecular weight (MW) can be defined in the following way,
MW=∑niAi
Where ni is the number of atoms of element i that form the molecule and Ai is the atomic weight of element i.
➣ The stoichiometric coefficients show the reactants proportions that are transformed and the products proportions that are produced.
➣ The molar ratio can be used to relate:
The moles of product formed from of certain moles of reactant.
The moles of reactant needed to form certain moles of a product.
The moles of a reactant needed to react with certain moles of a second reactant.
Please draw the structure in the box that is consistent with all the spectral data and
alphabetically label all of the equivalent protons in the structure (Ha, Hb, Hc....) in order to assign all
the proton NMR peaks. The integrations are computer generated and approximate the number of
equivalent protons. Molecular formula: C13H1802
14
13
12
11
10
11 (ppm)
Structure with assigned H peaks
2.08
3.13
A 0.10 M solution of acetic acid (CH3COOH, Ka = 1.8 x 10^-5) is titrated with a 0.0250 M solution of magnesium hydroxide (Mg(OH)2). If 10.0 mL of the acid solution is titrated with 10.0 mL of the base solution, what is the pH of the resulting solution?
Firefly luciferin exhibits three rings. Identify which of the rings are aromatic. Identify which lone pairs are involved in establishing aromaticity. The lone pairs are labeled A-D below.