1. Tenglamasi CuCO3 Cu(OH)2

51. Butan sulfat kislota ishtirokida kaliy permanganat bilan oksidlanganda, etil atsetat hosil bo‘lsa, butanning ekvivalent molyar massasini toping. A) 29,0 B) 19,3 C) 14,5 D) 58 E) 9,7
52. Etilbenzol sulfat kislota ishtirokida kaliy permanganat bilan oksidlanganda, uglerod(IV)oksid hosil bo‘lsa, etilbezolning ekvivalent molyar massasini aniqlang. A) 53,0 B) 35,3 C) 2,5 D) 2,7 E) 18,8
53. Toluol kislotali sharoitda kaliy permanganat bilan oksidlanganda, uglerod(IV)oksid ajralgan bo‘lsa, toluolning ekvivalent molyar massasini toping. A) 4,18 B) 2,88 C) 3,83 D) 2,56 E) 6,57
54. Quyidagi reaksiya uchun koeffitsientlar yig‘indisi nechaga teng? KBr+H₂SO₄+K₂Cr₂O₇→Br₂+Cr₂(SO₄)₃+H₂O+K₂SO₄
A) 23 B) 29 C) 27 D) 30 E) 37
55. HNO₃+P→NO₂+H₃PO₄+H₂O reaksiya uchun koeffitsientlar yig‘indisi nechaga teng? A) 10 B) 12 C) 15 D) 11 E) 13
56. Quyidagi ifodalangan reaksiyadagi moddalar koeffitsientlari yig‘indisini toping.
C₆H₅CHCHC₂H₅+KMnO₄+H₂SO₄→C₆H₅COOH+C₂H₅COOH+K₂SO₄+MnSO₄+H₂O
A) 54 B) 63 C) 60 D) 59 E) 65
57. Quyidagi reaksiyada moddalar koeffitsientlarining yig‘indisini hisoblang. C₆H₅C₂H₅+KMnO₄→C₆H₅COOK+K₂CO₃+KOH+MnO₂+H₂O
A) 10 B) 12 C) 15 D) 14 E) 17