Observe the following reaction: ABO_{3(s)} xr | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) The relationship between enthalpy change and internal energy change is given by: $\Delta_{r} H = \Delta_{r} U + \Delta n_{g} RT$. Given: $\Delta_{

Vedclass · Accepted Answer

$x - 8.3$

Vedclass · Answer

(A) The relationship between enthalpy change and internal energy change is given by: $\Delta_{r} H = \Delta_{r} U + \Delta n_{g} RT$. Given: $\Delta_{r} H = x \ kJ \ mol^{-1}$,$T = 1000 \ K$,$R = 8.3 \ J \ mol^{-1} \ K^{-1} = 8.3 	imes 10^{-3} \ kJ \ mol^{-1} \ K^{-1}$. For the reaction $ABO_{3(s)} ightarrow AO_{(s)} + BO_{2(g)}$,the change in the number of gaseous moles is $\Delta n_{g} = (n_{g})_{products} - (n_{g})_{reactants} = 1 - 0 = 1$. Substituting the values: $x = \Delta_{r} U + (1 	imes 8.3 	imes 10^{-3} \ kJ \ mol^{-1} \ K^{-1} 	imes 1000 \ K)$. $x = \Delta_{r} U + 8.3$. Therefore,$\Delta_{r} U = x - 8.3 \ kJ \ mol^{-1}$.

Observe the following reaction: $ABO_{3(s)} \xrightarrow{1000 \ K} AO_{(s)} + BO_{2(g)}$. $\Delta_{r} H$ for this reaction is $x \ kJ \ mol^{-1}$. What is its $\Delta_{r} U$ (in $kJ \ mol^{-1}$) at the same temperature? $(R = 8.3 \ J \ mol^{-1} \ K^{-1})$

Similar Questions

Mark the correct statement.

Two moles of an ideal gas are allowed to expand from a volume of $10 \ dm^3$ to $2 \ m^3$ at $300 \ K$ against a pressure of $101.325 \ kPa$. Calculate the work done. (in $kJ$)

For a reaction,$A_{(g)} \to A_{(l)}$; $\Delta H = -3RT$. The correct statement for the reaction is

When $1 \, \text{mole}$ of monoatomic ideal gas at $T \, \text{K}$ undergoes adiabatic change under a constant external pressure of $1 \, \text{atm}$ and changes volume from $1 \, \text{L}$ to $2 \, \text{L}$,the final temperature in Kelvin would be:

An ideal gas expands by performing $200 \ J$ of work,during this internal energy increases by $432 \ J$. What is the enthalpy change (in $J$)?

Vedclass Test Series

Exam Paper Generator

Online Exam Module