The 2011 Tōhoku earthquake and tsunami natural disaster that occurred on 11 March 2011 triggered a tsunami that caused t

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The 2011 Tohoku Earthquake And Tsunami Natural Disaster That Occurred On 11 March 2011 Triggered A Tsunami That Caused T 1 (46.86 KiB) Viewed 55 times

The 2011 Tōhoku earthquake and tsunami natural disaster that occurred on 11 March 2011 triggered a tsunami that caused the flooding of the Fukushima Daiichi Nuclear Power Plant. The loss of power to the nuclear reactor cooling system resulted in runaway nuclear reactions, reactor meltdowns, and hydrogen explosions that released radioactive material into the environment. At normal operating temperatures of approximately 300°C, a zircaloy cladding that protects the fuel rods is inert. However, above 1,200°C, zirconium metal reacts exothermically with water to produce hydrogen gas and zirconium oxide. a) What is the oxidation state of zirconium in zirconium oxide? b) The combination of zirconium and water to form zirconium oxide and hydrogen is an oxidation-reduction (redox) reaction. Complete the half-reactions describing this redox reaction. Zrº. → Z r4+ (oxidation) 4H* + → 4H⁰ (reduction) c) The hydrogen gas is vented into a headspace measuring 2.5 m x 2.5 mx 4.0 m. The hydrogen gas pressure measured by pressure sensors within the headspace was 15,500 atm while the hydrogen gas temperature was 700° The hydrogen gas reacted explosively with oxygen forming water. Using this information in conjunction with the stoichiometric ratios of a fully balanced chemical reaction between hydrogen and oxygen, calculate the mass of oxygen (in tonnes) that reacted with the hydrogen gas. Show all your workings to gain full marks.