[loaf]

hi,
I am diluting for first time, am I correct?

I am using 35% conc Hcl to dilute it so the final pH will be 2 with final quantity 6 ltrs
I tried this way,

density of conc acid=1.18
Molarity= 35x1.18/100 = 11.315 M
pH= -log11.315 = -1.05

final pH=2, Molarity= 10^-2 = .01

M1xV1 = M2xV2
V1= .01 x  6/11.315=5.3 ml Answer

[AWK]

_{Molarity= 35x1.18/100 = 11.315 M}
Thic calculation accidentally work (error 1.3 % gives you 2 significant digits correctly, but it works only for 35 % HCl) . You should use formula
c=10pd/M (p-percent concentration, d-density in grams/dm³, M - molecular mass of HCl in grams - you may use kilograms instead of grams in both d and M)