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Green chem 2

QuestionAnswer
ORDER OF EMISSIONS OF C02... HYDROGEN RELEASES THE LEAST ENERGY AND NO C02.
METHANE ,LPG, GASOLINE(PETROL),HEATING OIL, FUEL OIL, METHANOL, ETHANOL, COAL.
HYDROGEN IS MADE FROM METHANE BY...PASSING HYDROGEN + STEAM OVER CATALYST. CH4 + H20 à CO + 3H2.
HYDROGEN ALSO CAN BE PRODUCED BY... THE ELECTROLYSIS OF WATER CONTAINING ACID OR ALKALI, NEED ENERGY. SO IT HAS A CARBON FOOTPRINT.
ELECTROYSIS OF WATER CONTAINING ALKALI OR ACID TO PRODUCE HYDORGEN IS LESS EFFICIENT BEACUSE ... REQUIRES ENERGY CARBON FOOTPRINT.
CAN GENERATE ENERGY BY... SOLAR, WIND OR WAVE POWER.
HYDROGEN CANNOT BE STORED EASILY BECAUSE IT CAN ONLY BE LIQUEFIES ... BELOW -240DEGREES CELSIUS.
WHY CAN’T HYDORGEN BE USED AS FUEL FOR CARS ... HAS TO BE STORED IN CAR AS LIQUID BELOW -240 OR AS GAS AT HIGH PRESSURE.
WHAT DOES CRYOGENIC MEAN... VERY COLD .HYDROGEN HAS TO BE CRYOGENIC TO BE SOTRD IN CARS.
IF CRYOGENIC(VERY COLD) HYDROGEN USED IN CARS ... IT WILL EVAPORATE RISKING EXPLOSION IN THE CAR.
WHEN IS LIQUID HYDRPOGEN A BEST FUEL ... IN BOOSTER ENGINES OF SPACE ROCKETS.
BUTANE IS FOUND WITH METHANE IN ... NATURAL GAS, AND PRODUCED WHEN OIL IS CRACKED.
BUTANE CAN BE MIXED WITH PROPANE AND USED AS ... IN RURAL AREAS AND CAMPING.
HOW IS MXTURE OF PRPOPANE AND BUTANE TRANSPOTRTED ... IN REFILLABLE CYLINDER THAT CONTAIN MIXTURE OF LIQUEFIED BUTANE AND PROPANE.
BUTANE IS ALSO USED ... AS FUEL LPG OR AUTO GAS.
CARS MUST BE ADAPTED TO USE ... BUTANE FUEL , SPECIALISTS EQUIPMENT NEEDED TO REFILL.
WHY IS BUTANE LESS POLLUTING ... LEAVES FEWER UN BURNT HYDROCARBONS
OCTANE AND OTHER LIQUID HYDROCARBONS EASY TO TRANSPORT AND TRANSFER COZ .. AS THEY ARE LIQUID & NOT DANGEROUSLY VOLATILE.
ON COMBUSTION OF OCTANE AND LIQUID HYDROC THEY PRODUCE... A HIGH YIELDS OF ENERGY PER GRAM OR CM3.
WHEN DO OCTANE AND OTHER HYDROC PRODUCE MORE C02... IF AIR SUPPLY LIMITED E.G. CO PRODUCED AND UNBURNT HYDROCARBONS EMITTED. THEY PRODUCE SMOG AND ARE TOXIC. THE CO CAN BE REMOVED BY A CATALYTIC CONVERTER, BUT THE HIGH PRESSURE IN CONVERTER STOPS IT WORKING.
WHAT IS A CATALYTIC CONVERTER USED FOR ... REMOVE SMOG.
WHY IS SMOG PRODUCED ... DUE TO COMBUSTION OF HYDROCARBONS IN LIMITED OXYGEN CO AND UNBURNT HYDROCARBONS PRODUCED.
ALCOHOL METHANOL CAN BE MANUFACTURED FROM .... COAL OR METHANE.
COAL AND METHANE REACT WITH STEAM IN ... AN ENDOTHERMIC REACTION FORM CO AND HYDROGEN WHICH CAN MAKE METHANOL. C0 + 2H2 à CH3OH.
METHANOL IS ADVA... HIGHLY TOXIC, A GOOOOD FUEL, BURNING CLEANLY AND PRODUCING LESS C02.
Created by: ufuoma
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