Heat liberated when 100 mL of 1N NaOH is neutralised by 300 ml of 1N HCl

Options

A. A) 11.46 kJ
B. B )5.73 kJ
C. C) 22.92 kJ
D. D) 17.19 kJ

Answer

B

Explanation

1000 ml of N NaOH contains= 40g of NaOH`-=`1 mole
100 ml of N NaOH will contain
`=0.4gm" "NaOH-=(1)/(10)`mole
Now, `underset("0.1 mole")(OH^(-))+underset("0.1 mole")(H^(+)) to underset("0.1 mole")(H_(2)O)`
`because` When 1 mole of `H_(2)O` is formed, the heat produced =57.3 kJ
`therefore` When 0.1 mole `H_(2)O` is formed, the heat produced
`=57.3xx0.1=5.73kJ`