Answer to Question #174781 in General Chemistry for dafd

Question #174781

Adding NH4SCN: Dark Red Solution


Adding AgNO3: Cloudy white Solution:


Increasing Temperature: light orangish-yellow solution

Prediction bubbling orange

Decreasing Temperature: (Darker orange)

prediction: orange

Moving tube 4 to hot water: Light yellowish-orange

Prediction: orange

Moving tube 5 to ice water: Dark Orange

Prediction: orange

  • please answer all questions with an explanation*

  • Based on the color change you observe, is the equilibrium for the solution in the hot water shifting left or right?
  • Do your observations indicate that the reaction is exothermic or endothermic? That is, based on your observations, is heat a product or a reactant? How do you know?
  • What is the net ionic equation of this reaction with heat included in the equation?
  • Are equilibrium shifts reversible? Justify using evidence from the lab.
Expert's answer

The equilibrium is shifting to the right

The reaction is endothermic for heat is absorbed

No equilibrium shifts are not reversible

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