`150 mL` of `0.5N HCl` solution at `25^(@)C` was mixed with `150 mL` of `0.5 N NaOH` solution at same temperature. Calculate the heat of neutralization of `HCl` with `NaOH`, if find temperature was recorded to be `29^(@)C`.
`(rho_(H_(2)O)=1g//mL)`
Correct Answer - c
`HCl+NaOHto NaCl+H_(2)O`
at t=0,
number of moles = `(500xx0.1)/1000 = (200xx0.2)/1000 `
=0.05 =0.04
during neutralisation of 1 mole of NaOH by 1 mole of HCl, heat...
Correct Answer - B
Let normality of HCl is `N_1` and `H_2SO_4` is `N_2`.
`:.` Mili eq. of HCl + Mili eq. of `H_2SO_4` = Mili eq. of NaOH
`25xxN_1+25xxN_2=10xx1`..(1)
`N_1+N_2=0.4`…(1)...
Correct Answer - A
Number of moles of `NaOH=(MV)/(1000)=(0.5xx20)/(1000)=0.01`
Number of moles of `HCl=(MV)/(1000)=(0.1xx100)/(1000)=0.01`
Heat of neutralization `=(-x)/(0.01)=-100x`
Correct Answer - A
Number of moles of HCl and NaOH
`=(MV)/(1000)=(1xx100)/(1000)=0.1`
Heat released in neutralization `=0.1xx57=5.7kJ`
`=5700kJ`
Heat used to increase the temperature of mixed solution
`=msDeltaT`
`=200xx4.2xx5.7`
`=4788J`
Heat...
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