Quick questions on Thermochemistry (C2.2) - Eduqas A-Level Chemistry

3short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.

What is bonds broken minus bonds made?

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Using "made minus broken" reverses the sign. Breaking bonds costs energy (endothermic), so it is the positive term.

What is q1?

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State whether bond breaking is exothermic or endothermic, and explain why. [1 mark]

What is q2?

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Calculate the heat released when a reaction raises the temperature of

100\ \text{g}

of water by

8.0\ ^{\circ}\text{C}

. (

c = 4.18\ \text{J g}^{-1}\text{K}^{-1}

.) [2 marks]

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