Top 10k strings from Redox, Electrolysis and the Activity Series (1982)(Calpac Educational Software).z80 in <root> / bin / z80 / software / Sinclair Spectrum Collection TOSEC.exe / Sinclair ZX Spectrum - Utilities & Educational / Sinclair ZX Spectrum - Utilities & Educational - [Z80] (TOSEC-v2007-01-01) /
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7 t$="true ":
6 o$="true ":
4 o$="false":
3 t$="false":
2 t$="true "
2 o$="true "
2 e$="not correct":
2 e$="correct ":
2 "Well done."
2 -"'" Zn
2 -"'" I + 2e
2 Cu + H O"'"
1 s$="true "
1 s$="false"
1 r$="not correct"
1 r$="correct "
1 in the series from solutions of their salts."''"
1 gain electrons
1 f$="true "
1 Second statement
1 Reduction is the loss of oxygen
1 Reduction is the gain of"'"electrons.
1 Question ";n''"
1 Potassium
1 Oxidation is the gain of oxygen.
1 Oxidation is electron loss.
1 Magnesium
1 Lithium
1 Is the second statement true?
1 Is the 2nd statement a correct explanation of the 1st?
1 For example:
1 For example
1 First Statement"
1 Calcium
1 Aluminium
1 ;"Type y or n.
1 ;"Type e for explanation/comment otherwise press the ENTER key."
1 ;"Type 1, 2 or 3."
1 ;"Press the ENTER key to continue."
1 ;"Is the first statement true?"
1 ;"1. A revision tutorial"''" 2. A simple test"''" 3. A copy of the questions"'"
1 ;" Redox, Electrolysis and the"'"
1 . The partial ionic equation is:"''" 2-
1 , when"'"potassium is burnt in oxygen, the oxygen gains electrons and is therefore reduced."'
1 )to ethane (CH
1 )+("Well done."
1 )+("Very good."
1 )+("Good."
1 ) is classifiedas reduction":
1 ("Excellent."
1 ''''" Redox, Electrolysis and the"'"
1 '"You correctly answered ";s;" out"'"of 10 questions."''
1 & Educational Software
1 "correct "
1 "Zinc metal will displace copper from copper sulphate solution":
1 "Zinc is the more reactive metal,and is oxidised to give"'"zinc (II) ions."''"
1 "Zinc is below copper in the"'"activity series":
1 "Your very low score indicates a poor understanding of this topic"
1 "You were wrong. "''l$
1 "You need to spend more time on this topic."
1 "You need to read through your notes and text-book again,"'"and then re-run this program."
1 "When zinc reacts with iodine to form zinc iodide,"''"The zinc is
1 "When zinc reacts with iodine to form zinc iodide, the iodine is oxidised":
1 "When molten lead bromide is"'"electrolysed, a brown vapour"'"comes off from the cathode":
1 "When copper sulphate solution iselectrolysed using graphite"'"electrodes, hydroxide ions are discharged at the anode":
1 "When copper (II) oxide is heatedin a stream of hydrogen, copper metal is formed":
1 "Well done, you were right.":
1 "This is the modern definition ofreduction.
1 "The overall equation for the"'"reaction is:"''" Zn + I
1 "The metals which are readily"'"oxidised (have good reducing"'"properties) are placed at the top of the activity series."''"This is simply the way in which chemists have agreed to arrange the activity series.":
1 "The conversion of sulphite ions to sulphate ions is neither"'"oxidation nor reduction":
1 "The conversion of sulphite ions to sulphate ions is
1 "The charge on the sulphite ion is the same as the charge on thesulphate ion":
1 "The change from molecular iodineto iodide ions involves the gainof electrons":
1 "The change from ethene (CH
1 "The black copper oxide is"'"reduced to a reddish-brown"'"powder. This is a very fine formof copper metal."''"The hydrogen is oxidised to"'"water."''" CuO + H
1 "The anions present are hydroxideions (from the ionisation of"'"water) and sulphate ions."'"The hydroxide ions are"'"discharged to give oxygen gas:"''" -
1 "The activity series is based on the relative reactivities of themetals."''"One of the reasons for zinc"'"being above copper in the"'"activity series is the fact thatzinc will displace copper from aqueous solutions of its salts.":
1 "Silver metal reacts with dilute hydrochloric acid to liberate hydrogen gas":
1 "Silver is too unreactive a metalto liberate hydrogen gas from acids."''"It will dissolve in oxidising acids, e.g. in nitric acid, but no hydrogen is formed.":
1 "Silver is above hydrogen in the activity (electrochemical)"'"series":
1 "Reduction is the process by"'"which atoms, molecules or ions gain electrons":
1 "Reduction can be defined as a process involving the addition of hydrogen to a substance":
1 "Positively charged ions(cations)are attracted to the cathode."''"They gain electrons from the"'"cathode, and so are reduced."''"For example, lead ions gain"'"electrons to form lead atoms."''" 2+
1 "Oxidation is the process by"'"which atoms, molecules or ions
1 "Other definitions include:"''"
1 "No, You were wrong.":
1 "Metals high in the activity"'"series have good reducing"'"properties":
1 "Hydroxide ions have a single"'"negative charge, whereas"'"sulphate ions have a double"'"negative charge":
1 "Good, you were right."''l$
1 "Elemental chlorine oxidises"'"iron (II) ions":
1 "During electrolysis reduction takes place at the cathode":
1 "Do you want:";
1 "Do you want to run the program again?"
1 "Do you want to go through the questions in which you made"'"mistakes?"
1 "CuO + H
1 "Copper (II) oxide is a reducing agent":
1 "Chlorine molecules can take"'"electrons from iron (II) ions":
1 "Bromine is formed at the
1 "Both statements are true, and the 2nd is a correct explanationof the 1st."'l$'
1 "Both ions have a double negativecharge:"'''"
1 "Although the hydroxide ion has avery much lower concentration than the sulphate ion in copper sulphate solution, The hydroxideions are selectively discharged."''"However, there are examples in which ions with higher charges are discharged in preference to ions with a lower charge."''"There is no simple reason why some ions are discharged in"'"preference to others.":
1 "Addition of hydrogen has taken place, therefore the change is reduction."''"CH =CH + H
1 "A reducing agent gives electronsto the substance which is being reduced."''"Metals high in the activity"'"series, such as potassium,"'"readily give up electrons, and"'"form positive ions."''"They therefore act as reducing agents, and are themselves"'"oxidised."'"
1 "''"These electrons are taken from iron (II) ions."''"The chlorine molecules are"'"reduced to chloride ions.":
1 " The second statement was ";t$;" ":
1 " The first statement was ";o$;" ":
1 " -"," 2-"'" OH","SO"'," 4"''"Hydroxide
1 to water."''"The copper (II) oxide has acted as an
1 to iodideions.":
1 to copper metal, and the hydrogen is
1 sulphate":
1 reactivity.
1 order of decreasing
1 on your printer?";
1 lists the metals in
1 is not the reason why
1 in the activity"'"series can displace metals
1 hydrogen in the
1 hydrogen from acids.
1 from the zinc"'"atoms, and are
1 f$="false"
1 electrons."''"When an iron (II) ion loses one electron, an iron (III) ion is formed."''" 2+
1 copper in the"'"activity series."''"
1 are both below
1 agent in this reaction":
1 activity series.
1 Zn (aq)+ Cu(s)":
1 The fact that
1 The activity series
1 Sulphate"'
1 Potassium "'" Sodium "'" Lithium "'" Calcium "'" Magnesium "'" Aluminium "'"
1 Please type y
1 Neither can liberate
1 J J WARREN 1982
1 Copper and silver
1 CH CH"'" 2 2
1 BSc ARCS Cert Ed
1 Activity series."
1 Activity Series."''"
1 4"''"The sulphite ions give up"'"electrons and gain oxygen."''"
1 3 3"''"The reaction takes place when ethene gas and hydrogen are"'"passed over a heated nickel"'"catalyst.":
1 2-"," 2-"'" SO","SO"'" 3"," 4"''"sulphite
1 2-"'" O + 4e
1 2+"'"Zn(s)+ Cu (aq)
1 2"''"Zinc iodide is an ionic"'"compound.":
1 2"''"Some carbon dioxide is formed due to oxidation of the graphiteanode by the oxygen.":
1 2"''"Copper (II) oxide is
1 1982 J J Warren
1 -"'"e.g. K
1 -"'"SO + H O
1 -"'"4OH
1 -"'" Pb + 2e
1 -"'" Cu + 2e
1 -"'" Cl + 2e
1 -"'" 4K
1 -"'" 2Br
1 (loses"'"electrons)"'"
1 (gains"'"electrons)"'"
1 when molten lead bromide is"'"electrolysed. The bromine can beseen as a brown vapour."''"The molten electrolyte contains lead ions and bromide ions."''"The anions (negative bromide"'"ions) are attracted to the anodeand lose electrons. They undergoelectrolytic oxidation."
1 Zn + 2e"''"The iodine is
1 Zn + 2e"''"The electrons from the zinc"'"reduce the copper (II) ions to copper metal."''" 2+
1 SO +2H + 2e"'" 3
1 O + 2H O + 4e"'"
1 K + e":
1 Br + 2e"'"
1 4K + 4e":
1 2O"'" 2"''"The electrons come from the"'"potassium, which is oxidised."'"
1 2I"'" 2"''"In the reaction between iodine and zinc, the iodine molecules
1 2Cl"'" 2"'"
1 Fe + e"''"The electrons are taken by the chlorine, which acts as an"'"oxidising agent.":
1 "'" Silver