1. what is the colour of feso4.7h20 crystals? how does this colour change upon heating? give balanced
chemical equation for the changes.
2. a. what are redox reactions?
b. why is the reaction between mno2 and hcl a
redox reaction?
c. identify the substance oxidized and the
substance reduced in the above reaction.
3. balance the chemical equation: -
fe(s) + h2o(g)=fe3o4(s) + h2(g)
4. explain why:
a)respiration is an exothermic reaction.
b)all decomposition reactions are endothermic
reactions.
Answers: 3
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1. what is the colour of feso4.7h20 crystals? how does this colour change upon heating? give balanc...
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