Normality

[onedirection]

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Can someone explain this exactly

and the formula

Like why is N of H2SO4 when 1 M H2SO4 is reacted with CaCl2 is 1 N

While it's 2 N for NaOH

I read the formula is N = Mn where M is molarity and n is number of moles

So I guess the the NaOH one makes sense because 2 H+ are protonated so multiply 1 by 2

but what about the second one?

 

[enervate]

Like why is N of H2SO4 when 1 M H2SO4 is reacted with CaCl2 is 1 N

While it's 2 N for NaOH

There are two positively charged protons in H2SO4 and two negatively charged chloride ions in CaCl2. One mole of CaCl2 neutralizes one mole of H2SO4. If you want to dig a little bit deeper, the calcium ion in CaCl2 has a +2 charge and the SO4 ion in H2SO4 has a -2 charge so they cancel out.

Likewise, there is only one negatively charged hydroxide ion in NaOH so two moles of NaOH are required to neutralize every mole of H2SO4.