1.1.1 complete the table by providing labels \( A \) to \( D \) 1.2 The products below are displayed in a retail shop. Carefully analyse the products and answer questions that follow 1.2.1 indicate the functional group of product \( A \) and \( B(1) \) 1.2.2 give the scientific name of both product \( A \) and \( B(2) \) 1.2.3 Identify the product ( \( A \) or \( B \) ) which is ideal to be used for heating 1.2.4 Write the structural formula of product \( B \) 1.2.5 Product \( A \) can be oxidised to form another product. Give the scientific name of the product Activity 12 (alkanes and alcohol)
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Product \( A \) is likely an alcohol, while product \( B \) could be an alkane or another type of hydrocarbon. Alkanes are characterized by their carbon-carbon single bonds, lacking functional groups, whereas alcohols contain the hydroxyl (-OH) functional group. Thus, for product \( A \), we can label it as "alcohol" with its formula looking like \( R-OH \), and product \( B \) as "alkane," having a general formula of \( C_nH_{2n+2} \). When selecting products for heating, alcohols often provide a cleaner combustion than alkanes, depending on the specific applications. An example for an alcohol that fits these criteria is ethanol, which is commonly used as a fuel. Furthermore, the structural formula for product \( B \), if it were an alkane like hexane, would be \( CH_3-CH_2-CH_2-CH_2-CH_2-CH_3 \). If product \( A \) is, for instance, ethanol, it can be oxidized to form acetaldehyde (ethanal). So, the scientific names could be "ethanol" for \( A \) and "hexane" for \( B \).
