LIEN KET HOAHOC
3.69.Nguydn tft cfta nguyen tdX cd Z= 20, nguydn tft cfta nguydn tdY co
Z = 17. Viet cdu hinh electron nguyen tft cua X va Y va hay cho bilt loai lidn kdt gi tao thanh trong phdn tft hgp chd't cua X vd Y ? Vilt phuang trinh hod hgc cfta phan ftng dl minh hoạ
3.70*. Cho 3 gam hdn hgp X gdm mdt kim loai kilm A va natri tdc dung vdi
nudc du thu dugc dung dich Y va khf Z. Dl trung hod dung dich Y cdn 0,2 mol axit HCỊ Dua vdo bang tudn hoan, hay xdc dinh nguydn tft khdi va tdn nguyen td Ạ
Chucmg 4 ^ '. . .
PHAN QNG HOA HOC • •
Bai 25
PHAN Q N G 0 X 1 HOA - K H Q
4.1. Khi tham gia vdo phan ftng hod hgc, nguydn tft kim loai Ạ bi khft. B. bi oxi hod.
C. cho proton. D. dat tdi sd oxi hod dm. Hay chgn dap an dung.
4.2. Nguyen tft brom chuyin thanh ion bromua bang cdch
Ạ nhdn mdt electron. B. nhudng mdt electron. C. nhdn mdt proton. D. nhudng mdt proton. Hay chgn phuong dn dung.
4.3. Trong phan ftng : AgNOj + NaCl -^ NaN03 + AgCl>l'
Ion bac
Ạ chi bi oxi hod. B. chi bi khft.
C. khdng bi oxi hod, khdng bi khft. D. vfta bi oxi hod, vfta bi khft. Hay chgn phuong an dung.
4.4. Trong phan ftng : Zn + CUCI2 -> ZnCl2 + Cu Ion đng
Ạ chi bi oxi hod. B. chi bi khft.
C. khdng bi oxi hod, Ichdng bi khft. D. vfta bi oxi hod, vfta bi khft. Hay chgn phuang dn dung.
4.5. Trong phan ftng : CI2 + 2NaOH -> NaCl + NaClO + HjO Nguydn td clo
Ạ chi bi oxi hod. B. chi bi khft.,
C. khdng bi oxi hod, khdng bi khft. D. vfta bi oxi hod, vfta bi khft. Hay chgn phuong an dung.