True (+) or False (0) (2 pts each) 6. Reduction is the gain of electrons. 7. The
ID: 546946 • Letter: T
Question
True (+) or False (0) (2 pts each) 6. Reduction is the gain of electrons. 7. The excess reactant is completely used up in a reaction. 8. A reaction occurs when gasoline boils because a gas is formed. 9. Bicarbonates react with acids to produce hydrogen gas. 10. All metals react with acid. 11. Electrolyte solutions will conduct electricity 12. If blue litmus paper turns red, a solution is basic 13. HC2H302 is a strong electrolyte. 14. Acids produce hydroxide ions in water. 15. Spectator ions precipitate out of solution.Explanation / Answer
6) TRUE : Reduction is the gain of electrons.
7) FALSE : Excess reactant is not completely used up in the reaction but limiting reactant completely used up in the reaction.
8) False : Boiling of gasoline is physical change but not chemical change i.e., no reactions occur.
9) False : In reaction of bicarbonates with acids does not produce Hydrogen gas.
ex:- 2 NaHCO3 Na2CO3 + H2O + CO2
10) False : No all metals do not react with acids to produce hydrogen. Those metals which are more reactive than hydrogen and placed above the hydrogen in reactivity can only eact.
11) True : Electrolyte solutions will conduct electricity.
12) False : Blue litmus paper turns red under acidic conditions but not under basic conditions
13) False : HC2H3O2 is an weak acid ==> so it is not a strong electrolyte
14) False : Bases produce hydroxide ions in water
15) True : Spectator ions precipitate out of solutions.
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