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.
The 2015 Tesla Model S P85D is an electric car that seats five and has a range of 253 miles. This 691-hp, two-motor (one for the front wheels, one for the back) sedan sits at the top of the Tesla lineup and has a base price of $104,500. It replaces the previous P85, which was a sport version of the Model S 85, the most powerful version of this luxury sedan. Our tester is far from a base car.