Calculate the enthalpy change when infinitely diluted solution of CaCl 2 and Na 2 CO 3 are mixed- - H f 0 For Ca 2- aq - CO 32- aq and CaCO 3 s are -129-80-161-7-288-5 Kcalmol -1 respectively-

Enthalpy change during this process will be, ( Δ H^0_f)_Ca^2+ (Δ H^0_f)_CO^2 _3 + (Δ H^0_f)_CaCO_3 129.8 + 167.7 288.5 = 3 ...

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Standard XII

Mathematics

Monotonically Increasing Functions

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Question

Calculate the enthalpy change when infinitely diluted solution of $C a C l_{2}$ and $N a_{2} C O_{3}$ are mixed. $Δ H_{f}^{0}$ For $C a^{2 +} (a q)$ , $C O_{3}^{2 -} (a q)$ and $C a C O_{3} (s)$ are $- 129.80, - 161.7, - 288.5 K c a l m o l^{- 1}$ respectively.___

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Solution

Enthalpy change during this process will be,

$(- Δ H_{f}^{0})_{C a^{2 +}} - (Δ H_{f}^{0})_{C O_{3}^{2 -}} + (Δ H_{f}^{0})_{C a C O_{3}}$

$129.8 + 167.7 - 288.5 = 3$

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Which of the following statements is/are correct?

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Calculate the enthalpy change when infinitely diluted solution of CaCl2 and Na2CO3 are mixed. ΔH0f For Ca2+(aq), CO2−3(aq) and CaCO3(s) are –129.80,−161.7,−288.5Kcalmol−1 respectively.___

Enthalpy change during this process will be, (−ΔH0f)Ca2+−(ΔH0f)CO2−3+(ΔH0f)CaCO3 129.8+167.7−288.5=3

Calculate the enthalpy change when infinitely diluted solution of $C a C l_{2}$ and $N a_{2} C O_{3}$ are mixed. $Δ H_{f}^{0}$ For $C a^{2 +} (a q)$ , $C O_{3}^{2 -} (a q)$ and $C a C O_{3} (s)$ are $- 129.80, - 161.7, - 288.5 K c a l m o l^{- 1}$ respectively.___

Enthalpy change during this process will be,

$(- Δ H_{f}^{0})_{C a^{2 +}} - (Δ H_{f}^{0})_{C O_{3}^{2 -}} + (Δ H_{f}^{0})_{C a C O_{3}}$

$129.8 + 167.7 - 288.5 = 3$