CH-1270
Energy profile diagrams
Chemistry · Secondary 4 · Hard · Energy profile diagrams
A student measures the rate of decomposition of hydrogen peroxide solution with and without a manganese(IV) oxide catalyst.
Which energy profile diagram description is correct for the catalysed reaction compared to the uncatalysed one?
Which energy profile diagram description is correct for the catalysed reaction compared to the uncatalysed one?
- The activation energy is lower but the enthalpy change of reaction is unchanged
- Both the activation energy and the enthalpy change of reaction are lower
- The activation energy is unchanged but the enthalpy change is lower
- Both the activation energy and the enthalpy change of reaction are higher
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