CI 2+ H2 O^ H + HO
5.25. Khd'i lugng clo l a: 24,32 tdn.
Khd'i lugng hidro la : 0,71 tan. 126
185,40 +
5.26. HCI + NaOH -^ NaCl + HjO
Sd mol HCI trong 10 ml D = sd mol NaOH = ^ ^ j ^ ^ = 0,0015 (mol)
CM cua dung dich D = ' =0,15 mol/l
HCI + AgN03 -^ AgCli + HNO3
2 87
Sd mol HCI trong 80 ml E = sd mol AgCl = - ^ — = 0,02 (mol) CM cua dung dich E = ^ = 0,25 (mol//)
U,Uo
Dat ndng dd dung dich A la x mol/l, ndng do dung dich B la y mol/l.
Theo ddu bai, ta cd :
x+3y = 4 x 0 , 1 5 = 0,6 3x + y = 4 x 0,25 = 1,0 Giai he phuong trinh, ta ed x = 0,3 ; y = 0,1.
Ndng do cua dung dich A la 0,3 mol/l; ciia dung dich B la 0,1 mol/l.
5.27. Thft bdng dung dich AgN03 nhdn ra hai mudi clorua :
NaCl + AgNOg -^ AgCl^ + NaNOj BaClj + 2AgN03 -^ 2AgCli + Ba(N03)2
Hai dung dich khdng tao ra kit tua la hai mudi nitrat. Di phdn biet
2 dung dich NaCl va BaCl2 ta thft bdng dung dich H2SO4 : BaCl2 + H2SO4 -> BaS04l + 2HC1
Cung lam nhu vdy de phdn biet hai dung dich NaN03 va Ba(N03)2.
Bai 32
HOP CHAT CO OXI CUA CLO
+1 +3 +7
5.28. CI2O: diclo oxit ; HCIO2 : axit cloro ; CI2O7 : dielo heptaoxit ;
+1 +3 +7
+5 - 1 +1
HCIO3 : axit cloric ; KCl : kali clorua ; NaCIO : natri hipoclorit ;
+1 +5
Ca(C10)2 : canxi hipoclorit; KCIO3 : kali clorat ; CaOCl2 : clorua vdi, (trong phdn tft clorua vdi, mdt nguyen tft clo cd sd oxi hod +1 vd mdt nguyen tft clo ed sd oxi hod - 1 , sd oxi hod trung binh cua clo la 0).
0 - 1 + 1