Answer:
Explanation:
The <em>equilibrium constant</em> for an <em>equilibrium reaction </em>is the ratio of the equilibrium constant for the forward reaction, Kf, to the equilibrium constant for the reverse reaction, Kr:
- The forward reaction is: A → B, with rate constant is Kf = K₁ and
- The reverse reaction is: B → A, with rate constant Kr = K₂
When you write the reaction in the other reaction, the forward and the reverse reaction are exchanged:
- The forward reaction is B → A, with rate constant Kf = K₂
- The reverse reaction is A → B, with rate constant Kr = K₁
As you see:
Thus, <em>the equilibrium-constant expression for a reaction written in one direction is the </em><em><u> reciprocal</u></em><em>___</em><em> of the one for the reaction written for the reverse direction.</em>
Answer:
It provides the electrons that "make" electricity and it contains the electrons that are involved in molecular bond formation.
Answer:
False
Explanation:
Reactants are starting materials and are hence located at the left hand side of the equation while products are located at the right hand side.
Answer:
Carbon dioxide is a very soluble gas. It dissolves readily in water. As the oceans formed, carbon dioxide dissolved to form soluble carbonate compounds so its amount in the atmosphere decreased. Carbonate compounds were then precipitated as sedimentary rocks, eg limestone.
Uptake by living organisms
Carbon dioxide was also absorbed from the oceans into photosynthetic algae and plants. Many of these organisms, and the simple organisms in the food chains that they supported were turned into fossil fuels, eg crude oil, coal and natural gas, which all contain carbon.
Coal is a fossil fuel which was formed from trees which were in dense forests in low-lying wetland areas. Flooding caused the wood from these forests to be buried in a way that prevented oxidation taking place. Compression and heating over millions of years turned the wood into coal.
Crude oil and natural gas were formed from simple plants and tiny animals which were living in oceans and lakes. These small organisms died and their remains sank to the bottom where they were buried under sediments. The lack of oxygen prevented oxidation from occurring.
Over millions of years, heat and pressure turned the remains of the organisms into crude oil and natural gas. Natural gas contains the smallest molecules and is often found on top of crude oil, trapped under sedimentary rock.
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