1.23 Oct-1-ene, CH3(CH2)5CH=CH2, can be thermally cracke…

1.23 Oct-1-ene, CH3(CH2)5CH=CH2, can be thermally cracked.   Which combination of compounds W, X, Y and Z can be obtained by thermally cracking oct-1-ene?   W: CH2=CH2         X: CH3CH=CH2                   Y: CH3CH2CH3            Z: CH2=CHCH=CH2  

1.19 When solid ammonium chloride dissociates at a certa…

1.19 When solid ammonium chloride dissociates at a certain temperature in a 0.500 dm3 container, ammonia and hydrogen chloride are formed.   NH4Cl (s)< == > NH3(g) + HCl (g)   The initial amount of ammonium chloride was 1.00 mol, and when the system had reached equilibrium there was 0.300 mol of ammonium chloride.   What is the numerical value of Kc for this reaction under these conditions?  

1.14 The solids sodium chloride and sodium iodide both r…

1.14 The solids sodium chloride and sodium iodide both react with concentrated sulfuric acid at room temperature.   With NaCl, the products are NaHSO4 and HCl. With NaI, the products are NaHSO4, HI, I2, SO2, H2O, S and H2S.   What is the best explanation for this difference in products?

QUESTION 4 Using the given skeletal formula, answer the…

QUESTION 4 Using the given skeletal formula, answer the questions.   Right-click on the button to open the data booklet in a new tab.      4.1 Give the skeletal formula of a structural isomer. [1] 4.2 Give the skeletal formula of a functional isomer [1]   From the following structures:   Right-click on the button to open the data booklet in a new tab.   Right-click on the button to open the data booklet in a new tab.        4.3 Identify the type of isomer. [1]     [3]

QUESTION 5   Compounds containing different halogen at…

QUESTION 5   Compounds containing different halogen atoms covalently bonded together are called interhalogen compounds.   5.1 One interhalogen compound can be prepared by the reaction between iodine and fluorine. This compound has Mr = 222 and the percentage composition by mass is: F, 42.8; I, 57.2. Calculate the molecular formula of this interhalogen compound. [3] 5.2 Another interhalogen compound has the formula ICl. Draw a ‘dot-and-cross’ diagram of a molecule of this compound, showing outer shell electrons only. Explain whether or not you would expect this molecule to be polar. [2]     [5]