Beating heart of mercury

Beating heart of mercury

The drop of mercury starts to move rhythmically due to the rhythmic changes in the surface charge density and surface tension.

02:04

Chemistry

Keywords

heart of mercury, mercury, potassium dichromate, sulphuric acid, iron nail, iron, surface tension, surface charge density, redox reaction, oxidation, reduction, watch glass, beaker, experiment, inorganic, chemistry

On-screen labels

Hg, K2Cr2O7, dilute sulphuric acid solution, concentrated sulphuric acid, Fe, Fe-> Fe2+ + 2e-, e-, Cr2O2-7 + 14H+ -> 36e- -> 2Cr 3+ + 7H2O
Added to your cart.