First Law of Thermodynamics and Enthalpy Relation Quiz

An extensive property depends on the quantity of matter in the system. Example: mass.

An intensive property does not depend on the quantity of matter in the system. Example: temperature.

A thermodynamic system is in a state when all its thermodynamic properties are fixed.

<p>The state of a system can be changed by altering the values of its thermodynamic properties.</p> Signup and view all the answers

<p>PV=nRT represents the ideal gas equation for a gas with 'n' moles.</p> Signup and view all the answers

<p>Pressure, volume, and temperature are the three state variables that determine the state of a system.</p> Signup and view all the answers

<p>q = △E + P△V</p> Signup and view all the answers

<p>△H = △E + △nRT</p> Signup and view all the answers

<p>△H = △E</p> Signup and view all the answers

<p>△H &lt; △E</p> Signup and view all the answers

<p>P(V2 – V1) = (n2 – n1) RT</p> Signup and view all the answers

<p>The diagram shows the energy levels of reactants and products, with energy being absorbed or released during bond formation or breaking.</p> Signup and view all the answers

<p>The enthalpy change of a chemical reaction is equal but opposite in sign for the reverse reaction.</p> Signup and view all the answers

<p>ΔH_forward reaction = -(ΔH_backward reaction)</p> Signup and view all the answers

<p>The total change in enthalpy in a chemical reaction is constant, regardless of the number of steps involved.</p> Signup and view all the answers

<p>ΔH = ΔH1 + ΔH2 + ΔH3</p> Signup and view all the answers

<p>It depends on the initial and final state of the reaction, not the number of steps involved.</p> Signup and view all the answers

<p>If Q2 &gt; Q1, transforming a reactant to product and then back would result in a gain of heat energy.</p> Signup and view all the answers