Ser Bachiller 1 (13th)

Quiz
•
Chemistry
•
1st - 12th Grade
•
Hard
Adrian Huaca
Used 3+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Iguale por redox la ecuación
HNO3 + Zn → Zn (NO3)2 + NH4(NO3) + H2O
10 HNO3 + 4 Zn → 4 Zn (NO3)2 + NH4(NO3) + 3 H2O
10 HNO3 + 4 Zn → Zn (NO3)2 + 4 NH4(NO3) + H2O
20 HNO3 + 2 Zn → 2 Zn (NO3)2 + 8 NH4(NO3) + 2 H2O
22 HNO3 + 8 Zn → 8 Zn (NO3)2 + 2 NH4(NO3) + 7 H2O
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Con base en la reacción, determine el agente reductor
FeCl2 + H2O2 + HCl → FeCl3 + H2O
Oxígeno
Hierro
Cloro
Hidrogeno
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Determine los números de oxidación que correspondan al elemento nitrógeno en la ecuación
Fe + HNO3 → Fe (NO3)3 + NH4NO3 + H2O
N = 5+, 3+
N = 3+, 5+
N = 5-, 3+
N = 5+, 3-
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Seleccione las ecuaciones químicas balanceadas por simple inspección
1. 4 HClO3 + Pb (OH)4 → Pb (ClO3)4 + 4 H2O
2. H2S + K (OH) → K2S + H2O
3. 3 H2CO3 + Bi (OH)3 → Bi2(CO3)3 + 6 H2O
4. H2SO4 + 2 Li(OH) → Li2(SO4) + 2 H2O
5. 2 HCl + Zn → ZnCl2 + H2
1, 2, 4
1, 4, 5
2, 3, 4
2, 3, 5
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Identifique la ecuación balanceada utilizando los números de oxidación
Cu = 1+, Cu = 0, Cu = 2+, H = 1+, S = 6+, S = 2-, O = 2-
4Cu + 4H2SO4 → Cu2S + 2CuSO4 + 4H2O
10Cu + 4H2SO4 → 3Cu2S + 4CuSO4 + 4H2O
5Cu + 4H2SO4 → Cu2S + 3CuSO4 + 4H2O
6Cu + 3H2SO4 → 3Cu2S + CuSO4 + 8H2O
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
¿Cuántos átomos de hidrógeno existen en 45 moléculas de C5H12O2?
12
45
225
540
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Identifique la relación que se debe utilizar para calcular el porcentaje de composición del hidrógeno en el compuesto metano (CH4), considerando que la masa molar de los elementos es C = 12 g/mol y H = 1 g/mol.
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