When 1 MH 2 SO 4 is completely neutralised by sodium hydroxide, the heat liberated is 114.64 kJ. What is the enthalpy of neutralisation ?

Question

When 1 MH 2 SO 4 is completely neutralised by sodium hydroxide, the heat liberated is 114.64 kJ. What is the enthalpy of neutralisation ? (A) +114.64 kJ (B) -114.64 kJ (C) -57.32 kJ (D) + 57.32 kJ

Tardigrade Admin · Accepted Answer

Enthalpy of neutralisation is enthalpy change when 1 geq. of acid is neutralised by 1 geq. of base. In question, 2 geq. of

H_{2} S O_{4}

is being neutralised. Hence enthalpy of neutralisation is

\frac{- 114.64}{2} = - 57.32 kj

Q. When 1MH2​SO4​ is completely neutralised by sodium hydroxide, the heat liberated is 114.64kJ. What is the enthalpy of neutralisation ?

+114.64 kJ

-114.64 kJ

-57.32 kJ

+ 57.32 kJ

Enthalpy of neutralisation is enthalpy change when 1 geq. of acid is neutralised by 1 geq. of base. In question, 2 geq. of H2​SO4​ is being neutralised. Hence enthalpy of neutralisation is 2−114.64​=−57.32kj

Q. When $1 M H_{2} S O_{4}$ is completely neutralised by sodium hydroxide, the heat liberated is $114.64 k J$ . What is the enthalpy of neutralisation ?

Enthalpy of neutralisation is enthalpy change when 1 geq. of acid is neutralised by 1 geq. of base. In question, 2 geq. of $H_{2} S O_{4}$ is being neutralised. Hence enthalpy of neutralisation is
$\frac{- 114.64}{2} = - 57.32 kj$