1. Tenglamasi CuCO3 Cu(OH)2

65. Ammoniy bixromatning qizdirilganda parchalanish reaksiya tenglamasida o‘ng tomondagi koeffitsientlar yig‘indisini toping.
A) 7 B) 6 C) 10 D) 13 E) 11
66. Propilbenzolning kislotali muhitda, kaliy permanganat eritmasi bilan oksidlanish – qaytarilish reaksiyasi tenglamasidagi oksidlangan atomlar soni yig‘indisini toping. A) 5 B) 18 C) 15 D) 50 E) 84
67. Quyidagi oksidlanish – qaytarilish reaksiyasining ionli tenglamasi uchun molekulyar tenglama tuzib, koeffitsientlar qo‘yib tenglashtirilganda, koeffitsientlar yig‘indisi nechaga teng bo‘ladi?
A) 78 B) 62 C) 87 D) 35 E) 43
68. Quyidagi oksidlanish – qaytarilish reaksiyasining ionli tenglamasi uchun molekulyar tenglama tuzib, koeffitsientlar qo‘yib tenglashtirilganda, oksidlangan modda molekulasi oldidagi koeffitsient nechaga teng bo‘ladi? A) 13 B) 22 C) 6 D) 3 E) 9
69. Quyidagi reaksiyada H₂S+Cl₂+H₂O→H₂SO₄+HCl vodorod sulfidning ekvivalentini hisoblang. A) 34 B) 17 C) 8,5 D) 5,6 E) 4,25
70. Quyidagi reaksiyada koeffitsientlar yig‘indisini hisoblang.
KMnO₄+H₂S→MnO₂+S+K₂S+H₂O A) 6 B) 10 C) 14 D) 16 E) 20
71. KMnO₄+PH₃+H₂SO₄→nX+MnSO₄+K₂SO₄+H₂O tenglamadagi X moddani, undagi metallmasning oksidlanish darajasini, koeffitsienti(n)ni, va barcha koeffitsientlar yig‘indisini toping.
A) HPO₃; +5; 8; 32 B) P₂O₅; +5; 13; 28 C) H₃PO₄; +5; 8; 48
D) H₃PO₄; +5; 5; 54 E) H₃PO₄; +3; 3; 52
72. PCl₃+KMnO₄+H₂O=MnCl₂+H₃PO₄+KCl+HCl tenglamasidagi HCl ning koeffitsientini toping. A) 3 B) 9 C) 8 D) 4 E) 6