Adti qoshidagi akademik litsey: Ubaydullayev Komiljon Tursunboyevich

14.180g26,3%li simob(I) nitratning disproporsiyalanishidan olingan eritmaning Cm ni toping. (ρ = 2,5)
A) 1,4 B) 18 C) 2,8 D) 22,2


15.60 g 47% li HNO₂ ning disproporsiyalanishidan olingan eritmaning C% ni toping. (ρ = 1,2)
A) 3,33 B) 6,6 C) 26 D) 5


16.80g82% li H₂SO₃ ning disproporsiyalanishidan olingan eritmaning Cn normalini toping. (ρ = 1,7)
A) 28 B) 80,3 C) 14 D) 6,8


17. Qaysi reaksiya disiroporsiyalanish reaksiyasi bo’ladi?
A) Cu(NO₃)₂ ® CuO + NO₂ + O₂
B) Hg(NO₃)₂ ® Hg + NO₂ + O₂
C) KClO₃ ® KC1 + O₂
D) Cl₂ + KOH ® KCl + KClO + H₂
E) KNO₃ ® KNO₂ + O₂


18. Quyidagi tenglama
S + KOH K₂S + K₂SO₃ + H₂O koeffisientlarini va reaksiya turini toping.
A) 14, disiroporsiyalanish B) 11, almashinish
C) 14,ichki molekulyar D)15,disiroporsiyalaiish
E) 15, neytrallanish

4. Oksidlanish-qaytarilish reaksiyalarini elektron-balans usulida tenglash

1. K₂Cr₂O₇+K₂SO₃+H₂SO₄Cr₂(SO₄) ₃+K₂SO₄+H₂O

2. K₂Cr₂O₇+HClCl₂+KCl+CrCl₃+H₂O;
3. KMnO₄+KNO₂+H₂SO₄KNO₃+MnSO₄+K₂SO₄+H₂O;
4. PbO₂+MnSO₄+HNO₃HMnO₄+PbSO₄+Pb(NO₃)₂+H₂O;
5. NH₃+KMnO₄+KOHKNO₃+K₂MnO₄+H₂O;
6. K₂Cr₂O₇+H₂S+H₂SO₄Cr₂(SO₄)₃+S+K₂SO₄+H₂O;
7. MnS+HNO₃MnSO₄+NO₂+H₂O;
8. KOH+NO₂KNO₃+KNO₂+H₂O;
9. NaHCO₃+NO₂NaNO₂+NaNO₃+CO₂+H₂O;
10. KJ+H₂SO₄J₂+H₂S+K₂SO₄+H₂O;
11. FeS₂+HNO₃Fe(NO₃)₃+H₂SO₄+NO₂+H₂O;
12. PH₃+KMnO₄+H₂SO₄H₃PO₄+MnSO₄+K₂SO₄+H₂O;
13. HNO₃+J₂HJO₃+NO₂+H₂O; o) H₂SO₄+H₂SSO₂+S+H₂O;
14. CrCl₃+NaClO+NaOHNa₂CrO₄+NaCl+H₂O;
15. CuFeS₂+HNO₃Fe(NO₃)₃+Cu(NO₃)₂+SO₂+NO+H₂O;
16. HgS+HNO₃+HClHgCl₂+NO+H₂SO₄+H₂O.
17.Na₂S₂O₄+KMnO₄+HNO₃Na₂SO₄+H₂SO₄+Mn(NO₃)₂++KNO₃+H₂O
18. Cu(NO₃) ₂CuO+NO₂+O₂;
19. Hg(NO₃)₂Hg+NO₂+O₂;
20. Cl₂+KOHKCl+KClO+H₂O;
21. KClO₃KCl+O₂;
22. Cu+HNO₃Cu(NO₃) ₂+NO₂+H₂O;
23. NH₄NO₂N₂+H₂O;
24. NH₄NO₃N₂O+H₂O;
25. KJ+K₂Cr₂O₇+H₂SO₄J₂+Cr₂(SO₄)₃+K₂SO₄+H₂O;
26. As₂S₃+HNO₃+H₂OH₃AsO₄+H₂SO₄+NO;
27. KNO₃KNO₂+O₂;
28. KOH+NO₂KNO₃+KNO₂+H₂O;
29. KOH+SK₂S+K₂SO₃+H₂O.
30. H₂O₂+CrCl₃+KOHK₂CrO₄+KCl+H₂O;
31. H₂O₂+H₂SO₃H₂SO₄+H₂O;
32. H₂O₂+HJO₃J₂+O₂+H₂O;
33. H₂O₂+KMnO₄+HNO₃Mn(NO₃)₂+O₂+KNO₃+H₂O;
34. H₂O₂+HJJ₂+H₂O; f) H₂O₂+Ag₂OAg+O₂+H₂O;
35. H₂O₂+Cl₂+KOHO₂+KCl+H₂O;
36. H₂O₂+KMnO₄+H₂SO₄O₂+MnSO₄+K₂SO₄+H₂O;
37. H₂O₂+FeSO₄+H₂SO₄Fe₂(SO₄)₃+H₂O

38. H3AsO3 + HNO3 (suyul) ® H3AsO4 + NO# + H2O

5. Oksidlanish-qaytarilish reaksiyalariga oid masalalar.


1. KMnO₄ + HCl → KCl + MnCl₂ + Cl₂ + H₂O ushbu reaksiyani elektron balans usulda tenglab barcha koefitsentlar yig’indisini toping.
A) 35 B) 34 C) 20 D) 15


2. KMnO₄+MnSO₄+H₂O→H₂SO₄+K₂SO₄+MnO₂ ushbu reaksiya tenglamasida o’ng tomondagi kosffitsentlar yig’indisining chap tomondagi koeffitsentlar yig’indisi nisbatini aniqlang?
A) 8;7 B) 10;8 C) 15;7 D) 7;8


3. Au + HCl + HNO3 → H[AuCl₄] + NO₂ + H₂O ushbu reaksiyada barcha koefitsentlar yig’indisini toping.
A) 14 B) 15 C) 18 D) 9


4. Oksidlanish-qaytarilish reaksiyalarini tanlang.
1) CO₂ + H₂O + CaCO₃ → Ca(HCO₃)₂
2) CO₂ + Mg → C + MgO
3) CO₂ + Na₂O₂ → Na₂CO₃ + O₂
4) CO₂ + NaOH → NaHCO₃
5) CO₂ + C → CO
6) CO₂ + NH₃ + H₂O → NH₄HCO₃
7) CO₂ + H₂O → C₆H₁₂O₆ + O₂
A) 2,3,5 B) 1,4,6 C) 2,3,5,7 D) 1,3,5,6


5. Quyidagi KMnO₄ + Na₂SO₃ + H₂SO₄ =
K₂SO₄ + Na₂SO₄ + MnSO₄ + H₂O reaksiyada oksidlovchi va qaytaruvchilarning ekvivalent massasini hisoblang.
A)31,6;63 B)63,2;63 C)63;31,6 D)31,6;126


6. Mis yaltirog’ining (Cu₂S) konsentrlangan nitrat kislota eritmasi ta’sirida oksidlanish reaksiyasining o’ng tomonidagi koeffisientlar yig’indisini toping.
A) 19 B) 15 C) 16 D) 7


7. PbO₂+MnO₂+HNO₃→Pb(NO₃)₂+HMnO₄+H₂O tenglamasini tenglashtiring va H₂O koeffisientini aniqlang.
A) 2 B) 3 C) 4 D) 7


8. Cu₂S +HNO₃ → Cu(NO₃)₂ + NO + H₂SO₄ + H₂O tenglamasidagi HN03 ning koeffisientini toping.
A) 20 B) 22 C) 19 D) 24


9. Quyidagi KMnO₄ + H₂SO₄ + Na₂SO₃→
Na₂SO₄ + MnSO₄ + K₂SO₄ + H₂O reaksiyaning koeffisientlari yig’indisini toping.
A) 20 B) 21 C) 19 D) 15


10. Quyidagi Zn + H₂SO₄ → ZnSO₄ + H₂S + S + SO₂ + H₂O reaksiya uchun 65 gr rux olingan bo’lsa,qancha hajm (1, n.sh.) gaz ajraladi.
A) 5,6 В) 11,2 C) 22,4 D) 44,8


11 Quyidagi reaksiya tenglamasini tugallang va koeffisientlar yig’indisini toping.
KMnO₄ + H₂SO₄ + HNO₂→
A) 22 B) 20 C) 18 D) 21


12. Quyidagi reaksiya tenglamasini tugallang va chap tomondagi moddalar koeffisientlarining yig’indisini toping. Zn + H₂SO_4(k) →
A) 2 B) 10 C) 19 D) 21


13.HgS+HNO₃+HCl→HgCl₂+ H₂SO₄ + NO + H₂O reaksiyasida 10,2 gr HgCl₂ olish uchun necha gr oksidlovchi sarflanadi.
A) 6,3 B) 4,48 C) 12,6 D) 18,9


14. Taklif etilgan reaksiyada 18 gr Fe₂(SO₄)₃ hosil bo’lishi uchun necha gr K₂Сr₂O₇ sarflanadi. K₂Cr₂O₇ + FeSO₄ + H₂SO₄ →
Fe₂(SO₄)₃ + Cr₂(SO₄)₃ + K₂SO₄+ ..
A) 8,82 B) 4,41 C) 2,94 D) 3,7


15. K₂Cr₂O₇ + CH₃OH + H₂SO₄ →
HCOOH + K₂SO₄ + Cr₂(SO4)₃ + H₂O reaksiyasida 2,3 gr chumoli kislota olish uchun necha gramm sulfat kislota sarflanadi.
A)14,7 B)16,8 C)9,8 D)13,1


16. K₂Cr₂O₇ + HCl → CrCl₃ + C1₂ + KCl + H₂O reaksiyaning chap va o’ng tomonlaridagi koeffitsientlar ayirmasini hisoblang.
A)1 B)4 C)0 D) 3


17. Quyidagi oksidlanish-qaytarilish reaksiyasida 1 mol oksidlovchi bilan necha mol qaytaruvchi reaksiyaga kirishadi. K₂Cr₂O₇ + FeSO₄ + H₂SO₄ →
A)3 B)14 C)12 D)6


18. KI + H₂SO₄ + Na₂O₂→ Na₂SO₄ + I₂ + K₂SO₄ + H₂O reaksiya tenglamasining o’ng va chap tomonlaridagi koefisientlari ayirmasini toping.
A)0 B)10 C)5 D)1
19. Sn + H₂SO₄ → ……. SO₂ + H₂O reaksiyani tugallang va koefitsentlar yig’indisini toping.
A)12 B)7 C)5 D)9


20. Quyidagi reaksiyada 190,4 l (n.sh) NO chiqishi uchun necha mol HNO_3(c) kerak bo’ladi.
CuFeS₂ + HNO_3(c) → Cu(NO₃)₂ + Fe(NO₃)₃ + NO + H₂SO₄ + H₂O
A)16 B)17 C)3 D)32


21. H₂O₂ ning parchlanishi oksidlanish-qaytarilishni qaysi turiga kiradi.
A)ichki molekulyar oksidlanish-qaytarilish B)sinproporsiyalanish
C)disproporsiyalanish
D)ichki molekulyar va disproporsiyalanish


22. Quyidagi reaksiyadagi koeffitsentlarni ummumiy yig’indisini hisoblang?
P₂S₃ + HNO₃ +H₂O → H₃PO₄ + H₂SO₄ + NO.
A)76 B)78 C)94 D)56


23. Cl₂ ishqorning qaynoq eritmasi bilan disproporsiyalanish reaksiyasi natijasida hosil bo’lgan moddalarning koefitsentlar yig’indisini toping.
A)6 B)8 C)18 D)15


24. Karbonat angidridni 3,6 gr ko’mir bilan sinproporsiyalanish reaksiyasi natijasida hosil bo’lgan moddaning hajmini toping.
A)2,24 B)6,72 C)4,48 D)13,44


25. NH₄NO₃ ni sinproporsiyalanish reaksiyasi natijasida 13,2 gr gaz modda hosil bo’lgan bo’lsa dastlabki modda massasini gr toping.
A)24 B)80 C)28 D)48


26. SO₂ ni 13,44 l(n.sh) H₂S bilan reaksiyasi natijasida hosil bo’lgan qattiq moddaning massasini gr topimg.
A)19,2 B)38,4 C)28,8 D)57,6


27. 11,9 gr Sn ni SnO₂ orqali sinproporsiyalanish reaksiyasi natijasida hosil bo’lgan moddaning massasini gr toping.
A)13,5 B)40,5 C)27 D)9


28. Oltingugurt (IV) oksidni vodorod sulfid bilan reaksiyasi natijasida necha gr qattiq modda hosil bo’ladi va qancha gaz sarflanadi.

A) 16,8;11,2 B) 9,6;6,4

C) 11,2;16,8 D) 22,4;33,6


28. Qaysi reaksiya to’gri tenglangan?
1) PbS +2O₃ → PbSO₄ + O2
2)PbS + 4O₃ → PbSO₄ + 4O₂
3) PbS + 6O₃ → PbSO₄ + 7O₂
A)1 B)2 C)3 D)barchasi


29. Quyidagi reaksiyada chap tomondagi koeffitsentlar yig’indisi nechaga teng?
H₂O₂ + CrCl₃ + KOH → K₂CrO₄ + KCl + H₂O
A)21 B)13 C)15 D)18


30. Quyidagi reaksiyani chap va o’ng tomonidagi koeffitsentlar ayrimasini aniqlang?
As₂S₃ + HNO₃ + H₂O → H₃AsO₄ + H₂SO₄ + NO
A)12 B)8 C)9 D)11


31. K₂Cr₂O₇ + C + H₂SO₄ → Cr₂(SO₄)₃ + CO₂ + K₂SO₄ + H₂O reaksiyada oksidlovchining ekvivalentini toping
A) 98 B) 49 C) 147 D) 294


32. 490 gr 20% li bertole tuzi ichki molekulyar oksidlanish-qaytarilish reaksiyasiga kirishganda necha l(n.sh) gaz ajralib chiqadi.
A) 26,88 B) 39,2 C) 33,6 D) 22,4


33. P₄S₇ + HNO₃ + H₂O → H₃PO₄ + H₂SO₄ + NO ushbu reaksiyani chap tarafdagi koefitsentlar yig’indisini toping.
A) 95 B) 168 C) 73 D) 97


34. 340 gr 29,7% li KNO₃ ichki molekulyar oksidlanish-qaytarilish reaksiyasiga kirishganda hosil bo’lgan tuzning massa ulushini % toping.
A)25 B) 24,62 C) 26,23 D) 31,2


35. KMnO₄ ichki molekulyar oksidlanish-qaytarilish reaksiyasiga kirishganda 3,36 l(n.sh) gaz ajralgan bo’lsa,necha gr KMnO₄ parchalangan.
A) 47,4 B) 23,7 C) 63,2 D) 29,55