The specific heat capacity of water is 4.184 J/g degree C. What temperature rise

Question

The specific heat capacity of water is 4.184 J/g degree C. What temperature rise would you expect if 525 g of water absorbed 121.3 kJ of heat? 2. When 12.2 g of sodium hydroxide dissolves in 202.6 g of water the temperature rises from 20.7 degree C to 41.4 degree C. The Cp of the calorimeter is 22.0 J/degree C. (a) Write an equation for solid sodium hydroxide dissociating into ions when it dissol in water. (b) Is the reaction endothermic or exothermic? (c) What is the sign of delta H? ____________ (d) What is the value of ''q'' for NaOH in this reaction? (e) What is the value of delta H for NaOH in this reaction?

Explanation / Answer

Q1)

Apply heat equation

q= *m*Cp*(Tf-Ti)

121300 = 525*4.184*dT

dT = 55.22°C

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