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11.6. Alcohols
A subsection of Chemistry, 0620, through 11. Organic chemistry
Listing 10 of 234 questions
Ethanol is manufactured by two methods: method 1 fermentation of aqueous glucose method 2 catalytic addition of steam to an alkene. Method1 takes place at room temperature and pressure. State two other conditions needed in method1.  State the typical temperature and pressure used in method2. temperature °C pressure kPa  Name the alkene used in method2. State why the reaction in method2 is referred to as an addition reaction. The catalyst in method2 is phosphoricacid, H3PO4. Dilute phosphoricacid is a weak acid which contains phosphate ions, PO4 3–. State what is meant by the term acid. State the meaning of weak in the term weak acid. Determine the oxidation number of phosphorus in the PO4 3– ion. Show your working.  oxidation number = Give one advantage of each method of production of ethanol. method 1 method 2  Ethanol can be converted to ethanoicacid by reacting it with an acidified oxidising agent. Name the acidified oxidising agent. State, in terms of redox, what type of reagent ethanol is in this reaction. Ethanoicacid reacts with calcium to form a salt and one other product. Name the salt. Write the formula of the salt. Identify the other product. 
0620_w23_qp_41
THEORY
2023
Paper 4, Variant 1
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Questions Discovered
234