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What are the units of equilibrium constant Kc?
The units of equilibrium constant Kc are mol/Ln, where n is the sum of the stoichiometric coefficients of the products minus the sum of the stoichiometric coefficients of the reactants in the balanced chemical equation.
What is word equation for the burning of coal in oxygen?
This is called combustion. Combustion = burning an organic hydrocarbon in oxygen. Combustion yields stoichiometric amounts of carbon dioxide and water. .. CxHy + .. O2 --> .. CO2 + .. H2O insert the appropriate coefficients in .. spaces
Why is stoichiometric combustion rare?
Stoichiometric combustion is almost never possible because of imperfect fuel-air mixing. For economy and safety, most combustion equipment (such as heaters, furnaces, and engines) should operate with excess air to ensure that fuel is not wasted and that combustion is complete
When solving stoichiometric problems how is the correct mole ratio expressed?
The correct mole ratio is expressed using coefficients from a balanced chemical equation. These coefficients represent the relative number of moles of each substance involved in the reaction. The mole ratio is determined by these coefficients and is used to convert between different substances in stoichiometric calculations.
How can one determine the equilibrium constant for a chemical reaction?
To determine the equilibrium constant for a chemical reaction, you can measure the concentrations of the reactants and products at equilibrium and use these values in the equilibrium expression. The equilibrium constant (K) is calculated by dividing the concentration of the products raised to their stoichiometric coefficients by the concentration of the reactants raised to their stoichiometric coefficients.
The coefficients from a balanced equation are used to write conversion factors called?
stoichiometric coefficients.
What are the units of equilibrium constant Kc?
The units of equilibrium constant Kc are mol/Ln, where n is the sum of the stoichiometric coefficients of the products minus the sum of the stoichiometric coefficients of the reactants in the balanced chemical equation.
How do you balance an E-10 combustion reaction?
To balance the combustion reaction for E-10, which contains 10% ethanol and 90% gasoline, first write the chemical equation for ethanol combustion: C2H5OH + O2 -> CO2 + H2O. Then, adjust the coefficients of each compound in the equation to ensure that the number of atoms of each element is the same on both sides of the equation.
What is word equation for the burning of coal in oxygen?
This is called combustion. Combustion = burning an organic hydrocarbon in oxygen. Combustion yields stoichiometric amounts of carbon dioxide and water. .. CxHy + .. O2 --> .. CO2 + .. H2O insert the appropriate coefficients in .. spaces
Why is stoichiometric combustion rare?
Stoichiometric combustion is almost never possible because of imperfect fuel-air mixing. For economy and safety, most combustion equipment (such as heaters, furnaces, and engines) should operate with excess air to ensure that fuel is not wasted and that combustion is complete
Why dissociation constant has no unit?
The dissociation constant, also known as Kd, is a ratio of concentrations (product of the stoichiometric coefficients of the products divided by the product of the stoichiometric coefficients of the reactants) and therefore is dimensionless. As a result, it does not have any units.
When solving stoichiometric problems how is the correct mole ratio expressed?
The correct mole ratio is expressed using coefficients from a balanced chemical equation. These coefficients represent the relative number of moles of each substance involved in the reaction. The mole ratio is determined by these coefficients and is used to convert between different substances in stoichiometric calculations.
Is it true if the sum of the stoichiometric coefficients on one side of the equation will always equal the sum of the stoichiometric coefficients on the other side?
C6H12O6 + 6O2 -> 6CO2 + 6H2O 7 ( implied one in front of the carbohydrate glucose ) does not equal 12, so not true Only the sum of the atoms must be equal.
Is ethanol combustion exothermic?
Yes, ethanol combustion is an exothermic process. When ethanol reacts with oxygen during combustion, it releases energy in the form of heat and light, making it an exothermic reaction.
Does water affect the heat of combustion of ethanol?
There are two angles to this question: 1. If your ethanol is contaminated with water it will reduced the amount of useful heat generated since the water will boil off while the ethanol is burning. 2. The water generated as a result of combustion is included as a term in the calculation of heat of combustion.
How can one determine the equilibrium constant for a chemical reaction?
To determine the equilibrium constant for a chemical reaction, you can measure the concentrations of the reactants and products at equilibrium and use these values in the equilibrium expression. The equilibrium constant (K) is calculated by dividing the concentration of the products raised to their stoichiometric coefficients by the concentration of the reactants raised to their stoichiometric coefficients.
How can you use a balanced chemical equation to write an equilibrium constant expression?
To write an equilibrium constant expression using a balanced chemical equation, you need to identify the reactants and products involved in the equilibrium and write the expression as a ratio of the products raised to their stoichiometric coefficients divided by the reactants raised to their stoichiometric coefficients. The general format is [products]/[reactants]. The coefficients from the balanced equation become the exponents in the expression.
