Problem: H2 and I2 are combined in a flask and allowed to react according to the following reaction: H2(g) + I2(g) ⇌ 2 HI(g)Examine the figures (sequential in time) and answer the following questions.Which figure represents the point at which equilibrium is reached?

🤓 Based on our data, we think this question is relevant for Professor Galindo-Murillo's class at UTAH.

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Equilibrium → When the concentrations of reactants and products have become constant.


The reaction: H2(g) + I2(g) ⇌ 2 HI(g)

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Problem Details

H2 and I2 are combined in a flask and allowed to react according to the following reaction: H2(g) + I2(g) ⇌ 2 HI(g)
Examine the figures (sequential in time) and answer the following questions.
The figure shows 6 sequential states of the reaction. There can be 3 kinds of molecules in the flask. The first consists of 2 purple balls connected together, the second consists of 2 white balls connected together, and the last is a purple and a white ball attached to each other. At picture 1, there are 10 purple and 10 white molecules in the flask. At picture 2, there are 7 purple, 7 white, and 6 purple-white molecules in the flask. At picture 3, there are 5 purple, 5 white, and 10 purple-white molecules in the flask. At picture 4, there are 4 purple, 4 white, and 12 purple-white molecules in the flask. At picture 5, there are 3 purple, 3 white, and 14 purple-white molecules in the flask. At picture 6, there are 3 purple, 3 white, and 14 purple-white molecules in the flask.
Which figure represents the point at which equilibrium is reached?

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Chemical Equilibrium concept. You can view video lessons to learn Chemical Equilibrium. Or if you need more Chemical Equilibrium practice, you can also practice Chemical Equilibrium practice problems.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Galindo-Murillo's class at UTAH.