Heat of neutralization of CsOH with all strong acid is 13.4 kcal mol -1. The heat released on neutralization of CsOH with HF (weak acid)is 16.4 kcal mol -1 . Δ H ominus of ionization of HF is

Question

Heat of neutralization of CsOH with all strong acid is 13.4 kcal mol -1. The heat released on neutralization of CsOH with HF (weak acid)is 16.4 kcal mol -1 . Δ H ominus of ionization of HF is (A) 3.0 kcal (B) -3.0 kcal (C) 6.0 kcal (D) 0.3 kcal

Tardigrade Admin · Accepted Answer

H ⊕+ overset ominus OH longrightarrow H 2 O Δ H1=-13.4 kcal overset ominus OH + HF longrightarrow H 2 O + F ominus Δ H2=-16.4 kcal HF longrightarrow H ⊕+ F ominus Δ H1=? Δ H3=Δ H2-Δ H1=-16.4-(-13.4)=-3.0 kcal

Q. Heat of neutralization of $C s O H$ with all strong acid is $13.4 k c a l m o l^{- 1}$ . The heat released on neutralization of $C s O H$ with $H F$ (weak acid)is $16.4 k c a l m o l^{- 1} .Δ H^{⊖}$ of ionization of $H F$ is

$3.0 k c a l$

$- 3.0 k c a l$

$6.0 k c a l$

$0.3 k c a l$

$H^{\oplus} + O ⊖ H ⟶ H_{2} O Δ H_{1} = - 13.4 k c a l$
$O ⊖ H + H F ⟶ H_{2} O + F^{⊖} Δ H_{2} = - 16.4 k c a l$
$H F ⟶ H^{\oplus} + F^{⊖} Δ H_{1} = ?$
$Δ H_{3} = Δ H_{2} - Δ H_{1} = - 16.4 - (- 13.4) = - 3.0 k c a l$

Q. Heat of neutralization of CsOH with all strong acid is 13.4kcalmol−1. The heat released on neutralization of CsOH with HF (weak acid)is 16.4kcalmol−1.ΔH⊖ of ionization of HF is

3.0kcal

−3.0kcal

6.0kcal

0.3kcal