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10th grade Predict how an equilibrium shifts worksheet

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Predict how an equilibrium shifts

Grade 10 Science Worksheet

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Circle the best answer, or write your answer on the line.

Raising the pressure shifts N₂ + 3 H₂ ⇌ 2 NH₃ to the right, making 1.2 mol more NH₃. How many moles of H₂ are used, Bo?
2.
The pressure on N₂ + 3 H₂ ⇌ 2 NH₃ is raised. Which way does it shift, Jun?
- It does not shift
- Right: fewer gas moles
- Left: toward more gas moles
3.
The pressure on H₂ + I₂ ⇌ 2 HI (all gases) is raised. Which way does it shift, Kira?
- Right: toward HI
- No shift: gas moles are equal
- Left: toward H₂ and I₂
4.
The volume of 2 NO₂ ⇌ 2 NO + O₂ is made smaller. Which way does it shift, Luz?
- Right: more gas moles
- Left: fewer gas moles
- It does not shift
5.
N₂O₄ ⇌ 2 NO₂ has ΔH = +57.20 kJ. The mixture is heated. What happens, Milo?
- Nothing changes
- It shifts left: more N₂O₄
- It shifts right: more brown NO₂
6.
N₂ + 3 H₂ ⇌ 2 NH₃ has ΔH = −92.2 kJ. The mixture is cooled. Which way does it shift, Noah?
- Toward N₂ and H₂
- Toward NH₃
- It does not shift
7.
Which change alters the equilibrium constant K itself, Pia?
- A temperature change
- Adding a catalyst
- Adding more of a reactant
8.
Which change gives more ammonia at equilibrium, Ren?
- Raising the pressure
- Lowering the pressure
- Adding more NH₃
9.
Why is ammonia removed as it forms in an ammonia plant, Tala?
- So the gas cools down
- So the catalyst can keep working
- So the shift keeps making NH₃
10.
A catalyst doesn't shift the ammonia equilibrium. Why is one used, Zee?
- It lowers the pressure
- It makes more NH₃ at equilibrium
- Equilibrium is reached faster

10th grade Predict how an equilibrium shifts worksheet – printable — Print: 1 2 3 4 5 6

About this worksheet

Predict how an equilibrium shifts. Every version has 10 questions, and the answer key prints on the second page.

What your child will learn

I can use Le Châtelier's principle: an equilibrium shifts to ease a change.
I can predict shifts for added or removed substances, pressure (gas moles) and temperature (heat as reactant or product).
I can say a catalyst speeds the approach but doesn't shift the equilibrium.
I can choose changes that raise the yield of ammonia, as HS-PS1-6 asks, and explain the ammonia process's trade-off.

Standard: HS-PS1-6

Words to know

Le Châtelier's principle: A changed equilibrium shifts to ease the change

shift right: Toward the products

gas moles: The total coefficients of gases on one side

yield: How much product is made

ammonia process: Making NH₃ from N₂ and H₂ (Haber–Bosch)

Common mistakes

Your child multiplied by 2. Each N₂ makes two NH₃, so the N₂ needed is the NH₃ amount divided by 2.

Your child used the 3 in front of H₂ but not the 2 in front of NH₃. Three H₂ make two NH₃.

Your child divided the new volume by the old. Squeezing a gas into less space raises its pressure by old volume ÷ new volume.

Questions parents ask

What is the most common mistake with predict how an equilibrium shifts?

Your child multiplied by 2. Each N₂ makes two NH₃, so the N₂ needed is the NH₃ amount divided by 2.

Are these 10th grade science worksheets free to print?

Yes. All 6 printable versions at each level are free to print, with the answer key, and no account is needed.

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