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Ofbealding van de dag

Ofbealding van de dag

Flowering trees at the bottom of the Eiffel Tower in Paris (France). Today is the March equinox, which marks the beginning of astronomical spring in the Northern Hemisphere. +/− [nds-nl], +/− [en]

RSS-bron archive copy at the Wayback Machine ·

Per netpost · Eyrdere ofbealdingen van de dag

Media van de dag

Media van de dag

An experiment showing burning of sulfur in oxygen. A flow-chamber joined to gas washing-bottle (filled with solution of methyl orange) is being used. The product is sulfur dioxide (SO₂) with some traces of sulfur trioxide (SO₃). The 'smoke' that exits the gas-washing bottle is, in fact, a sulfuric acid fog generated in a reaction represented by:

SO₃(g) + H₂O(l) = H₂SO₄(aq).

The oxides are acidic, as can be witnessed by the colour change of the indicator.

+/− [nds-nl], +/− [en]

RSS-bron · Eyrdere media van de dag

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