Calculate the normality of a diluted solution of HCl if its 20ml of normality 10N is mixed with distilled water to make 1dm^3 soln.
Please involve all the steps and 'explain' me what exactly the problem is and how to go about ..
Thank you tonn in advance !!
2007-07-05 17:49:04 · 5 answers · asked by > FREAK < 1 in Science & Mathematics ➔ Chemistry
The normality and molarity of HCl are the same as HCl is a monoprotic acid. Since the number of moles of HCl will be the same in the concentrated and the dilulted solution (1 dm^3 = 1 L), then we can set the following equation:
Mconc * Vconc = Mdil * Vdil
Mdil = Mconc * Vconc / Vdil = 10 M * 0.020 L / 1.00 L = 0.20 M = 0.20 N
2007-07-05 18:13:34 · answer #1 · answered by TheOnlyBeldin 7 · 0⤊ 0⤋
First of all, in the case of a monoprotic acid like the one we have here, the normality and molarity are the same thing.
Dilution equation:
(MV)initial = (MV)final
1 cubic dm is one liter, which is 1000 mL
(10 M)(20 mL) = M(1000 mL)
M = .2 M = .2 N
2007-07-06 01:19:27 · answer #2 · answered by quepie 6 · 0⤊ 0⤋
The normality will be reduced by the ratio of initial solution volume to final solution total volume.
Nf = Ni*Vi/Vt
2007-07-06 01:15:42 · answer #3 · answered by gp4rts 7 · 0⤊ 0⤋
thats some advanced college stuff..i was reading it to see if i cud help u out, but i cant. sry :( besides, i only took high school chemistry n my teacher wasnt all that good
2007-07-06 00:52:54 · answer #4 · answered by ♥*~HΣαRT~*♥ 2 · 0⤊ 2⤋
Surely you mean molarity... or molality?
2007-07-06 00:57:13 · answer #5 · answered by punkstarr189 3 · 0⤊ 2⤋