SATHEE: Chemical Thermodynamics Question 420

Chemical Thermodynamics Question 420

Question: The lattice energy of solid $N a C l$ is $180 k c a l m o l^{- 1}$ and enthalpy of solution is $1 k c a l m o l^{- 1}$ If the hydration energies of $N a^{+}$ and $C l^{-}$ ions are in the ratio 3 : 2, what is the enthalpy of hydration of sodium ion-

Options:

A) $- 107.4 k c a l m o l^{- 1}$

B) $107.4 k c a l m o l^{- 1}$

C) $71.6 k c a l m o l^{- 1}$

D) $- 71.6 k c a l m o l^{- 1}$

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Answer:

Correct Answer: A

Solution:

$Δ H_{h y d .} = Δ H_{s o l .} - Δ H_{l a t t i c e}$

$= 1 - 180 = - 179 k c a l, m o l^{- 1}$ Then $Δ H_{h y d .} = (N a^{+}) + Δ H_{h y d .} (C l^{-}) = - 179$ or $Δ H_{h y d .} = (N a^{+}) + \frac{2}{3} Δ H_{h y d .} = - 179$ or $Δ H_{h y d .} = (N a^{+}) = - 107.4, k c a l, m o l^{- 1}$

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Chemical Thermodynamics Question 420

Question: The lattice energy of solid $N a C l$ is $180 k c a l m o l^{- 1}$ and enthalpy of solution is $1 k c a l m o l^{- 1}$ If the hydration energies of $N a^{+}$ and $C l^{-}$ ions are in the ratio 3 : 2, what is the enthalpy of hydration of sodium ion-

Options:

Answer:

Solution:

इंजीनियरिंग की तैयारी

चिकित्सा तैयारी

एनसीईआरटी पुस्तकें और समाधान

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अन्य संसाधन

पाठ्यक्रम

परीक्षा मंच

नमूना मॉक टेस्ट

सदस्यता

एनसीईआरटी व्यायाम वीडियो समाधान

Chemical Thermodynamics Question 420

Question: The lattice energy of solid NaCl is 180kcalmol−1 and enthalpy of solution is 1kcalmol−1 If the hydration energies of Na+ and Cl− ions are in the ratio 3 : 2, what is the enthalpy of hydration of sodium ion-

Options:

Answer:

Solution:

इंजीनियरिंग की तैयारी

चिकित्सा तैयारी

एनसीईआरटी पुस्तकें और समाधान

महत्वपूर्ण संसाधन

अन्य संसाधन

पाठ्यक्रम

परीक्षा मंच

नमूना मॉक टेस्ट

सदस्यता

एनसीईआरटी व्यायाम वीडियो समाधान

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Question: The lattice energy of solid $N a C l$ is $180 k c a l m o l^{- 1}$ and enthalpy of solution is $1 k c a l m o l^{- 1}$ If the hydration energies of $N a^{+}$ and $C l^{-}$ ions are in the ratio 3 : 2, what is the enthalpy of hydration of sodium ion-