Plz tell that for definition of enthalpy of neutralisation why can't we use i mole...as the actual definition is for 1 gram equivalentof acid and base

sir but all enthalpies like enthalpy of combu. ,enthalpy of formation , are defined for 1mole but how this definition valid if we say that for neutralisation 1mol of h2so4 we have to take 1mole of naoh

this is not a general definition for neutralisation( in terms of mole)

read my explanation shweta in the previous comment

ok sir

For HCl Gram equivalent=molar mass/ 1 as it's 1 mole will give 1 mole of H+

That's why we use equivalent.

For formation of water we need 1 mole of H+ & 1 mole of OH-.

For example 1 mole of H2SO4 release 2 mole of H+ so instead of mole we use gram equivalent.

So Gram equivalent= molar mass/2. That's why gram equivalent is useful.

Gram equivalent deals with no. of ions produced

so for this we can't used. definition in terms of mole right ??? because this vary for different acid and base example if we take1mol of h2so4 with 1 mol of naoh so its not a general definition that's why we use equivalent right

Absolutely Yes 😊

yes sir ...I got the answer

good keep it up and study more and more

ok sir

if you have problem in equivalent....see an equivalent is the number of moles of an ion in a solution multiplied by the valence of that ion. If 1 mol of NaCl and 1 mol of CaCl2 dissolve in a solution, there is 1 equiv Na, 2  equiv Ca, and 3 equiv Cl in that solution. (The valence of calcium is 2, so for that ion you have 1 mole and 2 equivalents.

also you find equivalent mass by (Molecular mass/ n- factor)...for acid n factor is basicity of that acid and if base then n factor is acidity of that base

read the above solution shweta you understand the concept behind this

as i have axplained above..see HCL have basicity of 1 as 1 H+ ions are produced and Basicity of H2So4 is 2 as 2 H+ ions are produced...so gram equiv of HCL = molar mass/1 and H2SO4 = Molar mass/2...similarly for base too...NAOH IS MONOACIDIC BASE, CA(OH)2 IS DIACIDIC BASE, AL(OH)3 IS TRIACIDIC BASE...so use n factor accordingly and get gram equiv

read shweta this explanation

ok

m asking about definition

yes as acid and base vary so gram equivalent weight here comes

yes sir

what is 1gram equivalent

now

when HCl acid is there then 1 grm equivalent = molar mass of HCL/1

when H2SO4 then Molar mass/2

i have explained this above

ok

sir