Calorimetry

What is the main reason a reaction between a strong acid and a strong base is exothermic?

• Formation of higher-energy bonds

• Formation of lower-energy bonds

• Absorption of energy from the surroundings

• Increase in temperature

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Which tool is used to measure heat changes in chemical processes?

• Barometer

• Calorimeter

• Thermometer

• Spectrometer

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What principle allows chemists to predict heat changes without evaluating every reaction pathway?

• Hess’s Law

• Avogadro's Law

• Le Chatelier's Principle

• Boyle's Law

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Why does water have a high specific heat capacity?

• Due to its covalent bonds

• Due to its metallic bonds

• Due to its ionic bonds

• Due to its extensive hydrogen bonding network

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What is a common source of experimental error in calorimetry?

• Perfect isolation of the system

• Heat loss to the environment

• Accurate measurement of temperature

• Consistent solution composition

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How does calorimetry connect theoretical thermodynamic concepts with real-world observations?

• By simplifying complex calculations

• By providing a tangible measurement of heat changes

• By ignoring heat changes

• By focusing only on theoretical equations

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What does Hess’s Law focus on to simplify enthalpy calculations?

• Initial reactants and final products

• Pressure changes

• Intermediate steps of the reaction

• Temperature changes

What is the role of hydrogen bonding in water's heat capacity?

• It only affects solid water

• It has no effect on energy absorption

• It increases energy absorption

• It decreases energy absorption

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What is a real-world application of thermodynamic calculations?

• Determining atomic mass

• Measuring atmospheric pressure

• Calculating speed of light

• Designing chemical heat packs

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How does thermodynamics bridge chemistry and physics?

• By focusing only on chemical reactions

• By concentrating solely on biological processes

• By governing energy transformations universally

• By ignoring physical principles

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