Hydronium ion, H3O+, is what gives a low pH to an aqueous solution. Hydronium ion is made when an acid donates a hydrogen ion to a water molecule.    Hydroxide ion, OH- â¦ , gives a higher pH to an aqueous solution. Hydroxide ions are found in bases; a base donates hydroxide ions to water.   Combining H3O+ + OH-makes 2 H2O.he hydronium ion is a polyatomic ion that forms when an acid releases a proton (H+) to a water molecule.
For the most part, the media seems to grasp the key features of electric-car maker Tesla Motors' (NASDAQ:TSLA) new Model X -- at least all features except for one critical element: price. Most media outlets are still asserting the Model X will start at $132,000. But this figure is off by quite a bit.
Most buyers opt for the larger battery despite its $10,000 price, Tesla says, for the added range and security. Prices range from $70,000 for the base Model S 70 to around $135,000 for an absolutely top-of-the-line P90D with all the options. The Model S is thus an expensive car that competes with mid-size and full-size luxury sedans, though Tesla has ambitious plans for a $35,000 electric car it says it will unveil during 2016. The Tesla Model S was a handsome and sleek design when it launched in 2012, and it remains so today.