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Aadaki veriler gz nne alndnda, K z [Fe x (C 2 O 4 ) y ].wH 2 O genel formlne sahip bir demir oksalat kompleksi

Aadaki veriler gz nne alndnda, K z [Fe x (C 2 O 4 ) y ].wH 2 O genel formlne sahip bir demir oksalat kompleksi numunesindeki oksalatn (C 2 O 4 2- ) ktlece %'sini belirleyin.

Oksalat ve permanganat arasndaki reaksiyon aadaki gibidir:

6H + + 5(COOH) 2 + 2MnO 4 - 10CO 2 + 2Mn 2+ + 8H 2 O

titrasyon iin kullanlan m(demir oksalat kompleksi) = 0,100 g

C(KMnO 4 ) standart zelti = 0,0200 M

Mw ( C2042- ) = 88.02 g/mol

Titre hacmi = 11,82 mL

Cevaplarnz 3 anlaml rakam iin verilen kutulara giriniz. Birim girmeyin. Bilimsel gsterimde ok byk veya kk saylar girilebilir - rnein 1.23x10 -4' temsil etmek iin 1.23E-4 girin.

Adm 1: Titrede KMnO 4'n (ve dolaysyla MnO 4 - ) mol saysn belirleyin:

n(KMnO 4 ) = n(MnO 4 - ) = C x V(L) = Cevap _____________ mol

Adm 2: KMnO4 ile reaksiyona giren C2O42-'nin mol saysn belirleyin:

n(C2O42-) = n((COOH)2) = n(MnO4-) x 5/2 = __________ mol

Adm 3: Reaksiyona giren C2O42- ktlesini ve dolaysyla numunedeki C2O42- ktle yzdesini belirleyin:

m(C2O42-) = n(C2O42-) x Mw(C2O42-) = ___________ g

%m(C2O42-) = [m(C2O42-)/m(demir oksalat kompleksi)] x 100 = ____________ %

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