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2762
What catalyst is used in the preparation of benzene from acetylene at a temperature of 70°C?
The preparation of benzene from acetylene at 70°C requires a specific catalyst. Organo-nickel is the correct catalyst used in this reaction, which is a cyclization process. Other options involve different catalysts or conditions not suitable for this specific reaction.
2763
What type of ether is used in the Wurtz synthesis?
The Wurtz synthesis is a chemical reaction that involves the reaction of alkyl halides with sodium metal to form alkanes. The use of dry ether is crucial in this reaction, allowing the sodium metal to react with the alkyl halides and form the desired product.
2764
A chemical reaction In which a chemical substance breaks down to form two or more simpler substances called:
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2765
What is the product when two moles of ethyl chloride react with two moles of sodium in ether?
When two moles of ethyl chloride react with two moles of sodium in the presence of ether, a Wurtz reaction occurs, resulting in the formation of 1 mole of butane.
2766
What is not a characteristic of a reversible chemical reaction?
In a reversible reaction, a catalyst speeds up both forward and reverse reactions equally, without changing the direction. It helps achieve equilibrium faster.
2767
What factor does not affect the equilibrium concentration of ammonia?
A catalyst speeds up the rate of both the forward and reverse reactions equally. While it shifts the equilibrium point faster, it does not alter the final concentrations of reactants and products.
2768
Reaction which proceeds in both directions is called_______________?
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2769
What percentage of fresh water is available to man?
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2770
The balanced chemical equation for the reaction which occurs when Be is added to water is____________?
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