jika 2 L larutan CH3COOH 4 M direaksikan dengan 8 L larutan NaOH 0,5 M, tentukan
a. pH larutan masing-masing sebelum bereaksi
b. pH larutan setelah bereksi (Ka CH3COOH= 2 x 10^{-5}
tolong bantuannya yah buat pr besok :D
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a. pH larutan masing-masing sebelum bereaksi
untuk masing2nya
CH3COOH ---> CH3CCO- + H+
H+ = 4 M
PH = -logVka.M
NaOH----->Na+ + OH-
OH- = 0,5 M
POH = -logV(kb.M)....PH = 14-POH
#lanjutkanya...
b. pH larutan setelah bereksi (Ka CH3COOH= 2 x 10^{-5}
CH3COOH + NaOH ----->CH3COONa +H2O
8 mol 4 mol
4 mol 4 mol 4 mol 4 mol
.............................................................................
4 mol (a) - 4 mol(g) 4 mol
PH = -logKa.a/g
#lanjutkan ya....