What hazard is associated with using palladium on carbon as a hydrogenation catalyst? and define chemoselectivity

3.12 g of the coal sample was Kjehldahlized and NH3 gas was absorbed in 50 mL of 0.1N H2SO4. After absorption, the excess (residual) acid required 12.5 mL of 0.1 N NaOH for exact neutralization. Determine the percentage of nitrogen in the coal sample.

Formulate questions about electylosys. What are the chemical principles behind this process?How can it be used in everyday life?What compounds are needed to carry out the process?What impact does this process have on the environment?Hypothesize the advantages and disadvantages of this electrochemical process.Determine the economic, environmental and social impact of using electrochemistry in this process. Do these benefits have an impact on the community?the reasons why you recommend using this process.

Heptacarbon octahydride is an effective gasoline additive. In the presence of oxygen gas (and a spark), it undergoes complete combustion. (a) Write the balanced equation for this reaction. Identify the oxidizing agent and reducing agent.

What is the purpose of the hexane in the halogen displacement? Intowhich layer (water or hexane) would the following species reside?Cl‐, I2, Cl2, Br‐, I‐, Br2

How does  14Si have the same valence of 126C ?

Discuss simulation of combustion phenomena. Write down the effect of by-products emitting in combustion.

Write the overall balanced reaction equation in steps to reduce hexavalent chromium in chromic acid (H2Cr2O7) to trivalent chromium using NaHSO3.

Write a balanced chemical equation for the decomposition of CaCO3 on heating and explain what the two sources of carbon dioxide are when this reaction is conducted on an industrial scale.

what are interhalogen compounds ?