Answer:
The chemical symbol will be "".
Explanation:
The given values are:
Current,
I = 2.50 amps
Time,
t = 2 hr
or,
= 7200 sec
Metal deposited,
W = 5.93 gm
As we know,
⇒
or,
⇒
On putting the given values, we get
⇒
⇒
hence,
⇒
⇒
⇒
Thus the above is the right answer.
Explanation :
(a)
This reaction is combustion reaction in which an oxygen react with a molecule to give its corresponding oxides ans water molecule.
(b)
This reaction is a redox reaction or oxidation-reduction reaction in which sulfur get oxidized and oxygen get reduced.
(c)
This reaction is a combination reaction in which the two reactants molecule combine to form a large molecule or product.
(d)
This reaction is a decomposition reaction in which a large molecule or reactant decomposes to give two or more molecule or products.
(e)
This reaction is a double displacement reaction in which the cation of two reactants molecule exchange their places to give two different products.
(f)
This reaction is a combination reaction in which the two reactants combine to form a large molecule or product.
(g)
This reaction is a double displacement reaction in which the cation of two reactants molecule exchange their places to give two different products.
(h)
This reaction is combustion reaction in which a hydrocarbon react with an oxygen to give carbon dioxide and water as a products.