elecTM101008

Test ID = 53

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1. (11105241) W hat is the type of reaction where electrons are transsferred?
REF: Ref 110, p46



2. (11105242) What is a loss of electrons called? What is a gain of electrons called?
REF: Ref 110, p46



3. (11105243) Reduction and oxidation happen spontaneously - hence the term redox.
    (A) Trur
    (B) False
REF: Ref 110, p46



4. (11105244) An oxidising agent............electrons and gets.............. (Fill in the blanks in the right order)
    (A) accepts, reduced
    (B) accepts, oxidised
    (C) dontates, oxidised
    (D) donates, reduced
REF: Ref 110, p46



5. (11105245) A reducing agent...............electrons and gets ................... (fill in the blanks in order)
    (A) accepts, reduced
    (B) donates, oxidised
    (C) donates, reduced
    (D) accepts, oxidised
REF: Ref 110, p46



6. (11105246) Write the equation for the redox reaction between sodium and chlorine, show the movement of electrons with arrows and state whether Na and Cl are either oxidised/reduced.
REF: Ref 110, p46



7. (11105247) All atoms are treated as ions when talking about oxidations states...?
    (A) True
    (B) False
REF: Ref 110, p46



8. (11105248) Uncombined atoms have an oxidation state of +1
    (A) True
    (B) False
REF: Ref 110, p46



9. (11105249) Atoms only bonded to identical atoms, like O2 and H2, have an oxidation state of 0.
    (A) True
    (B) False
REF: Ref 110, p46



10. (11105250) The oxidation state of a simple monatomic ion, e.g.Na+, is always one less than its charge?
    (A) True
    (B) False
REF: Ref 110, p46



11. (11105251) What is the oxidation state of oxygen in water?
    (A) 0
    (B) -2
    (C) -1
REF: Ref 110, p46



12. (11105252) What is the oxidation state of oxygen in H2O2 and F2O?
    (A) -2
    (B) 0
    (C) -1
REF: Ref 110, p46



13. (11105253) What is the oxidation state of combined hydrogen (e.g. in HF)?
    (A) +1
    (B) 0
    (C) -1
REF: Ref 110, p46



14. (11105254) What is the oxidation state of H in metal hydrides?
    (A) +1
    (B) 0
    (C) -1
REF: Ref 110, p46



15. (11105255) The oxidation state of H in H2 is?
    (A) +1
    (B) 0
    (C) -1
REF: Ref 110, p46



16. (11105256) Are the following two statements TRUE? In compounds or compound ions, the overall oxidation state is just the ion charge; The overall charge on a compound or compound ion is the sum of all the charges on the individual ions.
    (A) Yes
    (B) No
REF: Ref 110, p46



17. (11105257) What is the oxidation state of oxygen in SO42-?
    (A) -1
    (B) -2
    (C) 0
REF: Ref 110, p46



18. (11105258) What is the oxidation state of sulphur in SO42-?
    (A) +4
    (B) +3
    (C) +6
    (D) +7
REF: Ref 110, p46



19. (11105259) Look at the following statement. Within an ion, the most .................. element has a....................oxidation state (equal to its ionic charge). Other elements have more ................. oxidation states. (Choose one of the following in order of appearance in the sentence).
    (A) electronegative, positive, positive
    (B) electronegative, negative, negative
    (C) electropositive, negative, negative
    (D) electronegative, negative, positive
REF: Ref 110, p46



20. (11105260) The sum of the oxidation states for a neutral compound is 0.
    (A) True
    (B) False
REF: Ref 110, p46



21. (11105261) In the compound Fe2O3 give the oxidation states for the overall compound, oxygen amd iron.
REF: Ref 110, p46



22. (11105262) Is the oxidation state of a ligand equivalent to the charge on the ligand?
    (A) Yes
    (B) No
REF: Ref 110, p46



23. (11105263) What do roman numerals mean in a chemical name? Which part of the chemical formaul do the roman numerals apply to?
REF: Ref 110, p46



24. (11105264) What is the oxidation state of manganese in a manganate (VII) ion MnO4- ?
REF: Ref 110, p46



25. (11105265) The oxidation state for an atom will decrease by 1 for each electron lost?
    (A) True
    (B) False
REF: Ref 110, p46



26. (11105266) The oxidation state will decrease by 1 for each electron gained?
    (A) True
    (B) False
REF: Ref 110, p46



27. (11105267) An element can be oxidised and reduced at the same time?
    (A) True
    (B) False
REF: Ref 110, p46



28. (11105268) What is the name given to a redox reaction where an element is both oxidised and reduced at the same time?
REF: Ref 110, p46



29. (11105269) Give the equations for the reaction of i) sodium with chlorine; state clearly what the oxidation state of each reactant is before and after. ii) disproportionation of chlorine; state clearly what the oxidation state of chlorine atoms are before and after.
REF: Ref 110, p46






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