Question
What do you meant by state of system? Explain.
✓
Answer
A thermodynamic system is described by its pressure (P), volume (V), temperature (T) and composition of the system. These properties are known before and after change in the system. Pressure, volume, temperature and quantity are measurable (physical properties) of the system. The state of gas can be described by its pressure, volume and temperature and quantity ( n ). Pressure, volume and temperature are called state functions because their values depend on state of system and not on the way it is reached. To define the state of a system, all the properties of the system are not required because only some properties can change independently. The number of these properties depends on nature of the system. When for any system P, V, T and n , if the value of it is fixed then it is called state of system i.e. due to change in these properties state of system changes.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
→→→→→→
Why does formic acid exist as dimer? What is its one consequence?
Predict if the solutions of the following salts are neutral, acidic or basic: $NaCl , KBr , NaCN , NH _4 NO _3, NaNO _2$ and KF
→A sample of pure $PCl _5$ was introduced into an evacuated vessel at 473 K . After equilibrium was attained, concentration of $PCl _5$ was found to be $0.5 \times 10^{-1} mol L ^{-1}$. If value of $K _{ c }$ is $8.3 \times 10^{-3}$, what are the concentration of $PCl _3$ and $Cl _2$ at equilibrium?
$PCl _5(g) \rightleftharpoons PCl _3(g)+ Cl _2(g)$
→$PCl _5(g) \rightleftharpoons PCl _3(g)+ Cl _2(g)$
Derive the relationship between isothermal and free expansion of an ideal gas.
Kb for NH4OH is 1.8 × 10-5 and for CH3NH2 is 4.4 × 10-4. Which of them is strongest base and why?
The net enthalpy change of a reaction is the amount of energy required to break all the bonds in reactant molecules minus amount of energy required to form all the bonds in the product molecules. What will be the enthalpy change for the following reaction.
→$\text{H}_2(\text{g})+\text{Br}_2(\text{g})\rightarrow2\text{HBr}(\text{g})$
Given that Bond energy of H2, Br2 and HBr is 435kJ mol–1, 192kJ mol–1 and 368kJ mol–1 respectively.A liquid is in equilibrium with its vapour in a sealed container at a fixed temperature. The volume of the container is suddenly increased.
How do rates of evaporation and condensation change initially?
How do rates of evaporation and condensation change initially?
What do you understand by isoelectronic species? Name a species that will be isoelectronic with each of the following atoms or ions.
(i) $F ^{-}$(ii) $A r$ (iii) $M g ^{2+}$ (iv) $R b ^{+}$
→(i) $F ^{-}$(ii) $A r$ (iii) $M g ^{2+}$ (iv) $R b ^{+}$
At what temperature the solid and liquid are in equilibrium under 1 atm pressure?