G phan ling dugc voi ki^m nhung kh6ng phan ling vdi Nạ
E, F la hgfp chat cua Nạ
Xac djnh c6ng thirc cac chat X; A; B; C; D; E; F;'G.
Viet cac phuong tfinh phan ung theo so d6 trfin.
Cau 4. (5 diém)
M6t loai thuác sung c6 thanh phSn: C, S va mu6'i X dugc tr6n theo dun>'
ti le cua phucfng trinh phan ling nọ Lay 62,2 gam thudc sung^cho vao binh
thep chiu ap suát, kh6ng c6 khdng khị D6't nong binh cho phan ling xay i;; hoan toan, sau phan ting thu dugc h6n hop 2 khi va m6t chat ran Ỵ H6n hop . hoan toan, sau phan ting thu dugc h6n hop 2 khi va m6t chat ran Ỵ H6n hop .
khi CO kh6'i lugfng ga'p 27 Ian khdi lirong cua khi cd ciing the tich, d cun;. mdt di^u kien v^ nhiet đ va ap suát, mdt trong 2 khi la SO2, khi cdn lai cc mdt di^u kien v^ nhiet đ va ap suát, mdt trong 2 khi la SO2, khi cdn lai cc
kha nang lam due nude vdi trong. Ap suát trong binh liic nay la P, trong ciint dilu kien đ 19,2 gam O2 cung cd ap suát P. Y gdm 2 nguyen td cd ti le s( dilu kien đ 19,2 gam O2 cung cd ap suát P. Y gdm 2 nguyen td cd ti le s(
nguySn tii 1 : 1, hoa tan Y vao nude rdi cho dung dich AgNO, du vao thi thi
dugc 57,4 gam ke't tiia AgCl.
/, Xac dinh cdng thiic X, Ỵ
2. Vifít phuong trinh phan ung nd cua thudc siing. Cau 5. (5 diem) Cau 5. (5 diem)
Hdn hgp A gdm 2 kim loai Al va Mg, cho 1,29 gam A vao 200ml dunt dich CUSO4. Sau khi phan ung xay ra hoan toan thu dugc 3,47 gam chat ran h dich CUSO4. Sau khi phan ung xay ra hoan toan thu dugc 3,47 gam chat ran h
va dung dich C, Igc la'y dung djch C rdi thfim dung dich BaClj du vao, thu
dugc 11,65 gam k6't tuạ
1. Tinh ndng đ mol ciia dung dich CUSO4.
2. Tinh khdi lirgng timg kim loai trong hdn hgp Ạ
3. Ne'u cho dung dich NaOH vao dung dich C thu dugc ket tua D, la}
két ttia D dem nung ngoai khdng khi den khdi lugng khdng đi dugc m gam chat ran. Tim khoang xac dinh cua m. chat ran. Tim khoang xac dinh cua m.
Hl/dNG DAN LAM BAI Cfiu 1.
1. a) Dung kim loai Ba cho vao tCrng dung dich, cac dung dich d^u c6
khi thoat ra, đ la khi
Ba + 2H2O ^ Ba{OH\ t
Ba + 2HCl-^BaCl2+HjT
Hai dung dich cd ket tua la K^^^;K^COj.
BăOH)^ + K 2 S O 4- > BaSO, >l + 2 K 0 H
BăOH)^ + K^CO,BaCO, i + 2 K 0 H
Cho 2 dung dich khdng cd ke't tua (HCl va BaClj) vao 2 ke't tua: