Sulfuric acid is the chemical that is manufactured in the hi…

Sulfuric acid is the chemical that is manufactured in the highest volume in the world. It has many uses, and again, the production of fertilizers accounts for roughly half of the worlds output. Sulfuric aid has been manufactured at scale for many decades: A somewhat oversimplified, but balanced equation for the production of sulfuric acid is 2 S(s) + 3 O2(g) + 2 H2O(l)   →   2 H2SO4(aq) If 1000 moles of sulfur (S) are reacted with 1000 moles of Oxygen (O2), how many moles of H2SO4 are produced for fertilizer production?

Oxygen compounds of nitrogen contribute to air pollution, so…

Oxygen compounds of nitrogen contribute to air pollution, sometimes in a very visible way, Shown below is a chemical reaction that converts nitrogen tetroxide, N2O4, into nitrogen dioxide, NO2, a reaction that can occur in the atmosphere. N2O4 is colorless, but NO2 has a brown color, and its presence in the atmosphere contributes to the “pollution haze” observed in some cities. Is this reaction spontaneous at 25°C? K = °C + 273 ΔG = ΔH – TΔS

The Voyager spacecraft has now left the solar system and is…

The Voyager spacecraft has now left the solar system and is in interstellar space. Voyager carries with it a gold (Au) plated record containing some of the “sounds of Earth”. An image on the internet claims to show this actual record being gold plated, see below. I am not 100% sure this plating was performed by electroplating, but it looks like it could well have been. If so, would the record have acted as an anode or as a cathode in the plating process? The relevant chemical half reaction and the image are shown below.  Au+(aq) + 1 e- → Au(s) Gold plating the record that flies on the Voyager probe