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What is the difference between a thermochemical equation and a traditional chemical equation?
A thermochemical equation includes the enthalpy change of a reaction, whereas a traditional chemical equation only shows the reactants and products involved in a reaction without considering energy changes. Thermochemical equations provide information about the heat absorbed or released during a reaction, while traditional chemical equations focus on the chemical identities of the species involved.
What important information does a thermochemical equation have that a regular balanced equation does not?
A thermochemical equation shows the amount of heat given out or taken in when the reaction occurs. CH4 + 2O2 = CO2 +2H2O, deltaH = -890 kJ/mol Note delta H is negative when heat is given out, exothermic and +ve when endothermic. Sorry can't do delta symbol - its a triangle!
The phase change represented by the equation I2s to I2g is called?
The phase change represented by the equation I2s to I2g is called sublimation. This process occurs when a solid directly turns into a gas without passing through the liquid phase.
Why it is necessary to mention physical states of reactants and products in thermochemical equation?
Including the physical states of reactants and products in a thermochemical equation is important because it provides additional information about the conditions under which the reaction occurs. The physical state can impact the enthalpy change of the reaction, as different phases have different enthalpies of formation. It helps to ensure that the reaction is balanced and allows for a more accurate determination of the heat transferred in the reaction.
What is the melting equation for a substance?
The melting equation for a substance is the relationship between temperature and the state change from solid to liquid. It is represented by the equation Q m L, where Q is the heat energy required to melt the substance, m is the mass of the substance, and L is the specific latent heat of fusion.
What is the difference between a thermochemical equation and a traditional chemical equation?
A thermochemical equation includes the enthalpy change of a reaction, whereas a traditional chemical equation only shows the reactants and products involved in a reaction without considering energy changes. Thermochemical equations provide information about the heat absorbed or released during a reaction, while traditional chemical equations focus on the chemical identities of the species involved.
LThe rate of change in the equation y = m + b is represented by the m?
True
What important information does a thermochemical equation have that a regular balanced equation does not?
A thermochemical equation shows the amount of heat given out or taken in when the reaction occurs. CH4 + 2O2 = CO2 +2H2O, deltaH = -890 kJ/mol Note delta H is negative when heat is given out, exothermic and +ve when endothermic. Sorry can't do delta symbol - its a triangle!
The phase change represented by the equation I2s to I2g is called?
The phase change represented by the equation I2s to I2g is called sublimation. This process occurs when a solid directly turns into a gas without passing through the liquid phase.
What is an equation that will always equals 12?
An example of an equation that will always equal 12 is x=12. x will never change and will always be equivalent to 12.
The reaction between strontium metal and chlorine gas is described by the following thermochemical equation Sr s Cl2 g plus SrCl2 s deltaH -829 kJ mol-1 What will be the enthalpy change to 2 sig figs?
-830
Why it is necessary to mention physical states of reactants and products in thermochemical equation?
Including the physical states of reactants and products in a thermochemical equation is important because it provides additional information about the conditions under which the reaction occurs. The physical state can impact the enthalpy change of the reaction, as different phases have different enthalpies of formation. It helps to ensure that the reaction is balanced and allows for a more accurate determination of the heat transferred in the reaction.
Which of the equations below is an example of a thermochemical equation a Mg plus 2H3O plus plus Cl- --- Mg2 plus plus 2Cl- plus H2 plus h20 b 2H2 G plus 2O2 G ----H2O g plus 483.6kj c 2H2 G plus 2O2?
The equation c) 2H2 (g) + O2 (g) → 2H2O (g) is an example of a thermochemical equation because it shows the reactants and products with energy change included, but it doesn't explicitly mention the heat added or released during the reaction.
What is a unknown part of an equation represented by a letter?
An unknown part of an equation represented by a letter is called a variable. Variables are used to symbolize values that can change or that are not yet known. In mathematical expressions, they allow for the formulation of equations that can be solved to find specific numerical values. For example, in the equation ( x + 2 = 5 ), ( x ) is the variable representing the unknown value.
How is the rate of change represented in an equation?
If f(t) is some function of t (time), then the rate of change, with respect to time, is represented by f'(t). This is equal to the limit, as dt tends to zero, of {f(t+dt)-f(t)}/dt : if the limit exists.
What is the relation quadratic equation to linear equation?
The derivative of a quadratic function is always linear (e.g. the rate of change of a quadratic increases or decreases linearly).
What is the slant of a line in a graph?
The slope. Or the gradient, on a straight line graph, it is represented by m in the equation y=mx + c. It can also be calculated by the rise (change in y) ÷ run (change in x)
