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.
More importantly, the Model S is way more affordable than the companyâs $109,000 Tesla Roadster. The current price target for the Tesla Model S is $57,900 (minus a $7,500 federal tax credit)âstill not in range for most mainstream buyers but moving in the right direction.he driving range will be approximately 160 miles, with a full recharge time of about five hours. The battery will have a useful life between five and seven years, after which a new battery pack will cost âwell under $5,000,â according to Elon Musk, the companyâs chief executive.