Zadanie 1.1 – Matura Dwujęzyczna 2025 – Metabolizm

Treść wprowadzająca

The following experiment was carried out to investigate the catalytic activity of two compounds: inorganic potassium manganate(VII) and the catalase obtained from a potato. Four test tubes were filled with a 10% hydrogen peroxide solution and a solution of one of the two catalysts. Two of the four test tubes contained a catalyst that had previously been heated at 60 °C for 10 minutes and then cooled to room temperature before being added to the test tube. An additional test tube was filled with a solution of hydrogen peroxide with no catalyst. The design of the experiment and the observations are given in the table below.

Polecenie

Explain why no signs of reaction were observed in test tube 4 despite the addition of the catalyst.

Materiał źródłowy

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