Kimyoviy bog‘lanish

03-11son-5.
283. Quyidagi reaksiyani tugallang va oksidlovchining koeffitsientini toping.
KI+KClO₃+H₂SO₄→
A) 6 B) 1 C) 5 D) 3 E) 6
03-11son-6.
284. Quyidagi reaksiya natijasida hosil bo‘ladigan moddalarni aniqlang.
H₂S+CO₂→
A) oltingugurt va suv
B) sulfat kislota va suv
C) sulfit kislota va suv
D) sulfit angidrid va suv
E) sulfat kislota va sulfat anigidrid
03-11son-7.
285. Chap va o‘ng tomondagi koeffitsientlar yig‘indisi teng bo‘lgan reaksiyalarni aniqlang.
1) KClO₃+HCl→KCl+H₂O+Cl₂
2) Cl₂+H₂S+H₂O→H₂SO₄+HCl
3) PbO₂+H₂O₂+CH₃COOH→Pb(CH₃COO)₂+O₂+H₂O
A) 1 B) 2 C) 3 D) 1,2 E) 1,2,3
03-11son-8.
286. Chap va o‘ng tomondagi koeffitsientlar yig‘indisi teng bo‘lgan reaksiyalarni aniqlang.
1) Cu₂O+HNO₃=Cu(NO₃)₂+NO₂+H₂O
2) KJ+H₂O₂+H₂SO₄=J₂+K₂SO₄+H₂O
3) CI₂+KJ+H₂O=KCl+HJO₃+HCl
A) 1 B) 2 C) 3 D) 2,3 E) 1,2,3
03-11son-9.
287. Barcha koeffitsientlar yig‘indisi 7 ga teng bo‘lgan reaksiya tenglamalarini aniqlang.
1) FeSO₄+H₂O₂+H₂SO₄=Fe₂(SO₄)₃+H₂O
2) PbO₂+H₂O₂+CH₃COOH→Pb(CH₃COO)₂+O₂+H₂O
3) KI+H₂O₂+H₂SO₄=I₂+K₂SO₄+H₂O
A) 1 B) 2 C) 3 D) 2,3 E) 1,2,3
03-11son-10.
288. Quyidagi oksidlanish-qaytarilish reaksiyasida barcha koeffitsientlar yig‘indisi nechaga teng?
C₆H₁₂O₆+KMnO₄+H₂SO₄→CO₂+MnSO₄+K₂SO₄+H₂O
A) 185 B) 180 C) 197 D) 195 E) 198