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A
3% hydrogen peroxide solution, H2O2(aq),
is commonly used as a disinfectant.
Hydrogen peroxide, H2O2,
decomposes as represented by the balanced
equation below. 2H2O2
--> 2H2O + O2 +
heat
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74 State evidence,
from the equation, that the
reaction is exothermic. [1]
| Answer-->heat
is on the right of the
reaction, a product
heat is produced
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75 Explain, in
terms of substances, why the
reaction is a decomposition
reaction. [1]
| Answer-->one
substance breaks down
into 2 different
substances |
76 State how increasing the
temperature of the H2O2
affects the rate of the
reaction. [1]
| Answer--> increase
the reaction rate |
77 On the
potential energy diagram draw a
up down double-headed
arrow to indicate the
interval that represents the
heat of reaction. [1]
Answer-->  |
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Questions
78-82
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