28_ХІМ_11_Контрольна_Хімічні реакції
Quiz
•
Chemistry
•
11th Grade
•
Medium
Наталія Бобрик
Used 4+ times
FREE Resource
20 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Внаслідок реакції сполучення утворюється:
дві складні речовини
одна складна речовина
проста і складна речовина
декілька простих і складних речовин
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Для екзотермічних реакцій:
∆H > 0
∆H < 0
∆H = 0
∆H ≤ O
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Вкажіть рівняння реакції заміщення:
Cu(OH)2 + 2HCl = CuCl2 +2H2O
Zn + CuSO4 = ZnSO4 + Cu
CO2 + H2O = H2CO3
BaCO3 = BaO + CO2
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Вкажіть фактор, що може впливати на стан хімічної рівноваги:
інгібітори
індикатори
каталізатори
температура
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Вкажіть, яка з реакцій йонного обміну є оборотною:
AgNO3 + NaBr = AgBr + NaNO3
2LiNO3 + CaCl2 = Ca(NO3)2 + 2LiCl
2HCl + Na2S = 2NaCl + H2S
Zn + 2HCl = ZnCl2 + H2
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Вкажіть, яка з реакцій належить до екзотермічних:
MnO2 + 2C → Mn + 2CO; ∆H > 0
N2 + O2 → 2NO; ∆H > 0
2Mg + O2 → 2MgO; ∆H = - 1205 кДж
2SO3 → 2SO2 + O2; ∆H = + 198 кДж
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Вкажіть ступінь окиснення Мангану в сполуці KMnO4:
+7
+2
+6
+4
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