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Manganese dioxide (MnO₂) is an inorganic compound that naturally occurs as the mineral pyrolusite. It appears as a black or dark brown solid. Manganese dioxide is widely used due to its oxidative properties. In the production of dry cell batteries, it serves as a depolarizer, particularly in alkaline and zinc-carbon batteries. It is also utilized in the manufacture of glass and ceramics to remove color and in the production of pigments.
R79.10 – R244.10
Manganese dioxide (MnO₂) is an inorganic compound that naturally occurs as the mineral pyrolusite. It appears as a black or dark brown solid. Manganese dioxide is widely used due to its oxidative properties. In the production of dry cell batteries, it serves as a depolarizer, particularly in alkaline and zinc-carbon batteries. It is also utilized in the manufacture of glass and ceramics to remove color and in the production of pigments.
In the chemical industry, manganese dioxide is a crucial oxidizing agent used in the synthesis of various compounds, including the preparation of oxygen and chlorine. It acts as a catalyst in organic reactions, such as the oxidation of allylic alcohols. Additionally, MnO₂ is employed in water treatment processes to remove iron and manganese from drinking water, and in the preparation of other manganese compounds. Its versatility and effectiveness make it a valuable material in both industrial and laboratory settings.
For many learners high school is not enough to prepare them for what they are to face at first year university. They find themselves completely overwhelmed and intimidated by what is expected of them to be able to do in a laboratory.
Unfortunately many learners who want to pursue science subjects go through this dilemma, few as they are because fact is SA is not producing enough learners who will become engineers, doctors, science researchers, let alone science innovators.
To address this, we developed a chemistry kits with 52 experiments for use by learners at home. This gives them an opportunity to gain hand-on exposure and engagement, confidence and understanding they need to study sciences further.
The kit comes with a manual explaining how science is experienced in daily life and therefore brings awareness of the application and usefulness of science, helping the learner relate to what they learn at school.
Some schools do have kits where only the teacher demonstrates the experiments and this is great, but you don’t master driving by watching the driving instructor, you must get in the driver’s seat yourself.
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