. Marble is a rock that is composed primarily of the carbonate minerals calcite (CaCO3) and dolomite (Ca,Mg(CO3)2). In Exercise
1 answer:
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Answer:
Part a: <em>Units of k is </em><em> where reaction is first order in A and second order in B</em>
Part b: <em>Units of k is </em><em> where reaction is first order in A and second order overall.</em>
Part c: <em>Units of k is </em><em> where reaction is independent of the concentration of A and second order overall.</em>
Part d: <em>Units of k is </em><em> where reaction reaction is second order in both A and B.</em>
Explanation:
As the reaction is given as
where as the rate is given as
where x is the order wrt A and y is the order wrt B.
Part a:
x=1 and y=2 now the reaction rate equation is given as
Now the units are given as
The units of k is
Part b:
x=1 and o=2
x+y=o
1+y=2
y=2-1
y=1
Now the reaction rate equation is given as
Now the units are given as
The units of k is
Part c:
x=0 and o=2
x+y=o
0+y=2
y=2
y=2
Now the reaction rate equation is given as
Now the units are given as
The units of k is
Part d:
x=2 and y=2
Now the reaction rate equation is given as
Now the units are given as
The units of k is
The percent of O in Cr₂O₃ : 31.58%
<h3>Further explanation</h3>Given
Cr = 52.00 amu, O = 16.00 amu
Required
The percent of O
Solution
MW Cr₂O₃ = 2 x Ar Cr + 3 x Ar O
MW Cr₂O₃ = 2.52+3.16
MW Cr₂O₃ =152 amu