(a)
Interpretation:
The tube needs to be determined which contains the sodium metal when pieces of sodium and magnesium are dropped into separate water-filled test tubes (A and B) and there is vigorous bubbling in Tube A but not in Tube B.
Concept Introduction:
A
(a)
Answer to Problem 53A
The sodium metal is in tube A.
Explanation of Solution
There is a reaction of sodium with water in tube A as
There is a reaction of magnesium with water in tube B as
The vigorous bubbling is a result of a reaction between sodium and water, thus, tube A contains sodium metal.
(b)
Interpretation:
The equation needs to be determined for the tube which contains the sodium metal and determine the type of reaction that occurs in this tube.
Concept Introduction:
A chemical reaction in which two or more products are produced by one reactant is called a decomposition reaction and the general form of such reaction is
(b)
Answer to Problem 53A
The reaction from tube A is
Explanation of Solution
There is a reaction of sodium with water in tube A as
So, the equation is
The above reaction is an example of a single displacement reaction.
Chapter 11 Solutions
Chemistry 2012 Student Edition (hard Cover) Grade 11
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