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IB Chemistry Test Prep - Question List

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31. Which of the following elements exists as a liquid at 25 degrees Celsius?

Silicon
Chlorine
Boron
Arsenic
Mercury

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32. How many molecules are in .275 grams of SO₃?

3.22x10²⁰
4.50x10²¹
2.07x10²¹
1.12x10²⁰
4.56x10²²

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33. Which of the following molecules displays planar geometry?

NH₃
BH₃
XeO₄
CH₄
SiF₆

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34. What volume of .250 M potassium hydroxide is needed to neutralize 1.25 liters of .500 M hydrochloric acid?

2.50 liters
1.25 liters
.625 liters
.375 liters
5.0 liters

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35. Which of the following conditions guarantees that a reaction will occur spontaneously in the forward direction?

The temperature is negative
Change in enthalpy is positive
Change in entropy is negative
Change in Gibbs free energy is negative
Change in temperature is positive

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IB Chemistry Test Prep - Question List

Select how would you like to study

Select how would you like to study