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One brand of commercial ferrous sulfate has 24.9% of the total molar mass coming from Fe. Given that the ferrous sulfate has a hydrated form i.e. has the general formula FeSO4.xH₂O, where x is the number of water molecules in the chemical formula, calculate the value of x in the commercial brand, quoting your answer to the nearest whole number. Show all your workings.

One brand of commercial ferrous sulfate has 24.9% of the total molar mass coming from Fe. Given that the ferrous sulfate has a hydrated form i.e. has the general formula FeSO4.xH₂O, where x is the number of water molecules in the chemical formula, calculate the value of x in the commercial brand, quoting your answer to the nearest whole number. Show all your workings.

Chemistry: Matter and Change
Chemistry: Matter and Change
1st Edition
ISBN:9780078746376
Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
Publisher:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
Chapter11: Stoichiometry
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a. Iron chlorosis causes plants to have a uniform yellowing of their leaves. Ferrous sulfate is used to treat iron chlorosis. One brand of commercial ferrous sulfate has 24.9 % of the total molar mass coming from Fe. Given that the ferrous sulfate has a hydrated form i.e. has the general formula FeSO4.xH₂O, where x is the number of water molecules in the chemical formula, calculate the value of x in the commercial brand, quoting your answer to the nearest whole number. Show all your workings. II. During water treatment, the iron in the ferrate ion is reduced to Fe³+. This process is described by the following half equation and standard electrode potential: FeО²¯ (aq) +8H* (aq) +3e¯ ⇒ Fe³+ (aq) + 4H₂O (1); Ee =+ Use your answer to part (b)(i) to construct the balanced redox reaction, in acidic conditions, for the reaction between FeО4²¯ and CH³ CH₂ CHO. Explain each step in the process. b. Compounds containing the ferrate ion (FeO,²-) have been proposed as environmentally friendly water treatment chemicals as they are able oxidize and degrade toxic organic compounds present in wastewater. i. Construct a balanced half equation, in aqueous acidic conditions, for the oxidation of the carbon atoms in CH3 CH₂ CHO to CO2. Explain each step of the process and include state symbols. www cell iii. Given that the En for the redox reaction in part (b)(ii) is +1.46 V, calculate the standard reduction potential for the process described in part (b)(1). You should include your working in your TMA submission document.
Transcribed Image Text:a. Iron chlorosis causes plants to have a uniform yellowing of their leaves. Ferrous sulfate is used to treat iron chlorosis. One brand of commercial ferrous sulfate has 24.9 % of the total molar mass coming from Fe. Given that the ferrous sulfate has a hydrated form i.e. has the general formula FeSO4.xH₂O, where x is the number of water molecules in the chemical formula, calculate the value of x in the commercial brand, quoting your answer to the nearest whole number. Show all your workings. II. During water treatment, the iron in the ferrate ion is reduced to Fe³+. This process is described by the following half equation and standard electrode potential: FeО²¯ (aq) +8H* (aq) +3e¯ ⇒ Fe³+ (aq) + 4H₂O (1); Ee =+ Use your answer to part (b)(i) to construct the balanced redox reaction, in acidic conditions, for the reaction between FeО4²¯ and CH³ CH₂ CHO. Explain each step in the process. b. Compounds containing the ferrate ion (FeO,²-) have been proposed as environmentally friendly water treatment chemicals as they are able oxidize and degrade toxic organic compounds present in wastewater. i. Construct a balanced half equation, in aqueous acidic conditions, for the oxidation of the carbon atoms in CH3 CH₂ CHO to CO2. Explain each step of the process and include state symbols. www cell iii. Given that the En for the redox reaction in part (b)(ii) is +1.46 V, calculate the standard reduction potential for the process described in part (b)(1). You should include your working in your TMA submission document.
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