Paper 2 · thermochemistry

Burning butanol raised the temperature of 150 g of water by 10 °C. Taking the specific heat capacity of water as $4.2\ J\,g^{-1}\,K^{-1}$ , the heat produced is

A0.63 kJ

B6.3 kJ

C63 kJ

D630 kJ

Explanation:

q = mc\Delta T = 150 \times 4.2 \times 10 = 6300\ J = 6.3\ kJ

Derived from ZIMSEC Chemistry Paper 2, November 2008, Q1

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