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1998 WAEC Chemistry Theory (a) What is the IUPAC name of Fe\(_2\)(SO\(_4\))\(_3\)? (b)(i) Write an equation to represent the...

Chemistry
WAEC 1998

(a) What is the IUPAC name of Fe\(_2\)(SO\(_4\))\(_3\)?

(b)(i) Write an equation to represent the reaction of hydrogen sulphide with iron (III) chloride solution.

(ii) Mention one change observed during the reaction in (b)(i) above.

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Explanation

(a) IUPAC name of Fe\(_2\)(SO\(_4\))\(_3\) is iron (iii) tetraoxosulphate (VI)

(b)(i) Equation of reaction of H\(_2\)S and FeC\(_3\) is 2FeCI\(_3\) + H\(_2\)S \(\to\) 2FeCl\(_2\) + 2HCI + S.

(ii) Changes observed. Brown solution changes to green and yellow deposit is formed.


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