7.
An 800g aluminium block cools from 70 °C to 25 °C.
a) Given that the specific heat capaci...
Chemistry, 16.10.2021 01:30 superfly903
7.
An 800g aluminium block cools from 70 °C to 25 °C.
a) Given that the specific heat capacity of aluminium is 0.902 Jg='°C ', calculate the heat released
b) Calculate the heat capacity of the aluminium block
Answers: 2
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Consider the reduction reactions and their equilibrium constants. cu+(aq)+e−↽−−⇀cu(s)pb2+(aq)+2e−↽−−⇀pb(s)fe3+(aq)+3e−↽−−⇀fe(=6.2×108=4.0×10−5=9.3×10−3 cu + ( aq ) + e − ↽ − − ⇀ cu ( s ) k =6.2× 10 8 pb 2 + ( aq ) +2 e − ↽ − − ⇀ pb ( s ) k =4.0× 10 − 5 fe 3 + ( aq ) +3 e − ↽ − − ⇀ fe ( s ) k =9.3× 10 − 3 arrange these ions from strongest to weakest oxidizing agent.
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