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What is the standard molar entropy of a substance?
What is the standard molar entropy of a substance?
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Practice Questions
1 question
Q1
What is the standard molar entropy of a substance?
Entropy at 0 K
Entropy at 25 °C and 1 atm
Entropy at boiling point
Entropy at melting point
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Standard molar entropy is defined as the entropy of 1 mole of a substance at 25 °C and 1 atm pressure.
Questions & Step-by-step Solutions
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Q
Q: What is the standard molar entropy of a substance?
Solution:
Standard molar entropy is defined as the entropy of 1 mole of a substance at 25 °C and 1 atm pressure.
Steps: 4
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Step 1: Understand what entropy is. Entropy is a measure of disorder or randomness in a system.
Step 2: Know that 'molar' refers to a quantity of substance measured in moles. One mole is approximately 6.022 x 10^23 particles.
Step 3: Recognize that 'standard' means specific conditions. In this case, it refers to a temperature of 25 °C and a pressure of 1 atm.
Step 4: Combine these ideas: Standard molar entropy is the measure of disorder for 1 mole of a substance at the specified conditions.
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