What is the value of n in the following equation? Cr2O72- + 14H+ + ne- → 2Cr 3+ + 7H2O
A. 2 B. 3 C. 6 D. 7 Correct Answer: Option C C. 6Consider the following reaction equation: X(g) + Y(g) ⇌ XY(g); ∆H = + 220KJ mol-1 If the temperature of the system is increased, the
A. backward reaction would be favoured B. forward reaction would favoured C. reaction would stop D. reaction would be at equilibrium Correct Answer: Option B A. backward reaction would be favouredWhich of the following metallic oxides is amphoteric?
A. AI2O3 B. Fe2O3 C. MgO D. Na2O Correct Answer: Option A A. AI2O3When NH4CI was dissolved in water, the container was cold to touch. This implies that?
A. the process is endothermic B. the process is exothermic C. NH4CI is highly soluble in water D. NH4CI forms a saturated solution Correct Answer: Option A A. the process is endothermicProducts
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