Hydrogen storage and transport might risk an explosion if there is a leak. Water vapour is also a greenhouse gas, significantly more H2O released would add on to the greenhouse effect.

Fossil fuels were formed as the result of photosynthetic processes that take place hundreds of millions of years ago. Solar energy was a necessary ingredient in the formation, so the energy that is stored in chemical bonds on fossil fuels originally was invested from the Sun.

Efficiency of producing hydrogen by electrolysis is 70-80%, whereas burning hydrogen of efficiency of 85% yields heat with overall efficiency of 60-70%. Therefore, it would be inefficient and wasteful.

Yes, if more water is introduced into the environment, it will cause flooding. Obtaining purified hydrogen requires a lot of energy therefore it is expensive and at the same time, time consuming to do so. It is also difficult to store and transport hydrogen because it occupies a lot of space. Thus, it is impractical to use hydrogen as a fuel. Hydrogen is highly flammable and may ignite a fire easily.

Energy from the Sun is essential for living things on Earth as it provides warmth and energy. Just like fossil fuels, which provides electricity to carry out daily activities on Earth. Fossil fuels come from the decomposition of living things in a food cycle, and they obtain energy from plants. Plants photosynthesize in the presence of sunlight.

It is an expensive process and it uses a lot of energy. It uses fossil fuel to produce electricity for the electrolysis process of water. Burning of fossil fuels produces harmful pollutants such as sulfur dioxide that may lead to acid rain, which is harmful to the environment.

Water vapour is a greenhouse gas. Thus as more water is released into the environment, more heat energy get captured and radiated back to the Earth, making the Earth warmer.
Switching to a hydrogen economy may result in ozone depletion due to leakage of hydrogen gas.
Because of UV radiation, hydrogen gas may form free radicals that act as a catalyst for ozone depletion.

Fossil fuels were formed as the result of photosynthetic processes that took place hundreds of millions of years ago. Solar energy was a necessary ingredient in the formation, so the energy that is stored in chemical bonds in fossil fuels originally was invested from the Sun.

most of the electricity is generated using technologies that result in greenhouse gas emissions and are energy intensive. The capital cost of an electrolyzer unit is high as well as the balance of system, and energy got converting electricity to hydrogen is not very efficient.

The production of extra H2O will be of concern as it begs the fundamental question of ‘where will the produced water go?’. If the water is released to the external environment its effects would be dependent on temperature. For example, in freezing temperatures the water released onto roads would freeze causing hazardous driving conditions. If the excess water is kept within, it means that extra mass must now be stored-creating problems with space and for vehicle’s energy efficiency. Water is also a greenhouse gas, therefore, is dangerous to the environment is excess amounts.
Negative Consequences: Expensive, storage, replacing current infrastructure, flammable.

Fossil fuels are hydrocarbons, coal, oil or natural gas formed from the remains of dead plants and animals. Fossil fuels is a general term for buried combustible geological deposits of organic matter and materials. They are formed from decayed plants and animals by exposure to heat and pressure in the Earth’s crust over hundreds of millions of years.

The electrolysis of water to produce hydrogen gas requires energy, and hence there would be an accompanying need to burn fossil fuels to generate the enormous amount of heat required to split water through electrolysis. Therefore, cost and pollution would be high.

The production of extra H2O will be of concern as it begs the fundamental question of ‘where will the produced water go?’. If the water is released to the external environment its effects would be dependent on temperature. For example, in freezing temperatures the water released onto roads would freeze causing hazardous driving conditions. If the excess water is kept within, it means that extra mass must now be stored-creating problems with space and for vehicle’s energy efficiency. Water is also a greenhouse gas, therefore, is dangerous to the environment is excess amounts.
Negative Consequences: Expensive, storage, replacing current infrastructure, flammable.

Fossil fuels are hydrocarbons, coal, oil or natural gas formed from the remains of dead plants and animals. Fossil fuels is a general term for buried combustible geological deposits of organic matter and materials. They are formed from decayed plants and animals by exposure to heat and pressure in the Earth’s crust over hundreds of millions of years.

The electrolysis of water to produce hydrogen gas requires energy, and hence there would be an accompanying need to burn fossil fuels to generate the enormous amount of heat required to split water through electrolysis. Therefore, cost and pollution would be high.

Water may be a very dangerous pollutant. Depending on the weather condition produced steam may rise and form clouds around the road, or it may form fog at the road surface, or it may condense and drop on the road. Even in warm weather water on the road will be dangerous. In freezing weather it will make the road downright treacherous, especially if most or all vehicles on the road are powered by hydrogen fuel cell.

Fossil fuels were formed as the result of photosynthetic process that rook place hundreds of millions of years ago. Solar energy was a necessary ingredient in the formation, so the energy that is stored in chemical bonds in fossil fuels originally was invested from the sun.

The source of the required electricity—including its cost and efficiency, as well as emissions resulting from electricity generation—must be considered when evaluating the benefits and economic viability of hydrogen production via electrolysis.

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Yes, it is a concern because water is a greenhouse gas. Hence, it has the potential to cause global warming. Too much of it released in the atmosphere will lead to a greenhouse effect, causing environmental problems.

Fossil fuels are formed as a result of photosynthesis that took place millions of years ago. Solar energy is a necessary ingredient in the formation so the energy stored in chemical bonds in fossil fuels originally was from the sun.

Firstly, it requires a lot of energy to electrolyse water. Moreover, pure water is required for the process and this is hard to obtain especially since it is costly to purify water. Lastly, water is a precious resource that is scarce in certain regions. Hence, it might not be a viable means to obtain hydrogen.

If hydrogen accumulates, it will result in approximately 10% decrease in atmospheric ozone. This is due to the fact that UV radiation can cause hydrogen molecules to form free radicals in the stratosphere. These free radicals will act as catalyst for ozone depletion.

Fossil Fuels were formed as a result of organic matters being put under extreme pressure. These organic matters were the results of photosynthetic process. Solar energy was converted to potential energy in these organic matters which eventually becomes the potential energy in fossil fuels.

The process does not have a very high efficiency as large amounts of energy is required to separate O2 and H2 out of H20. The overall net energy produced is not sufficient.