How many hydroxide ions are needed to completely neutralize 1.0 liter of 0.50 M HCI?

1 Answer
anor277
May 21, 2018

#"Half an Avocado number...."#

Explanation:

We address the stoichiometric equation....

#HCl(aq) + NaOH(aq) rarr NaCl(aq) + H_2O(l)#

We have #1.0*Lxx0.50*mol*L^-1-=0.50*mol# with respect to (formal!) hydrogen chloride molecules. Stoichiolmetric equivalence requires an equal number of hydroxides....i.e. #1/2*molxxunderbrace(6.022xx10^23*mol^-1)_"Avogadro's number"# . Claro?

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