Answer : Option C)
6.3 X .
Explanation : Given is the concentration of benzoic acid is 0.200 M, now only one monoprotic acid ion is getting separated from it [
.
So, the reaction will be as,
⇔
+
.
We can use the ICE method for calculation,
The molar concentration of
is 0.200 M and the [
is 3.55 X
.
So here on reactant side we get, (0.2 - 3.55 X
) = 0.196
on the product it remains as 3.55 X
.
So,
= (3.55 X
) X (3.55 X
) / 0.196
We will get
as
6.42 X which is close to 6.3 X .
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Answer:
C) CH4 (g) + O2 (g)→ CO2 (g) + H2O (g)
Explanation:
Methane burns in the presence of air to give carbondioxide and water.
Also, All Alkanes combust in the presence of Oxygen to give carbondioxide and water.
At room temperature the air is Gas
Answer:
380g
Explanation:
Given parameters:
Number of moles of Fluorine = 20moles
Unknown:
Mass of Fluorine = ?
Solution:
The number of moles is the unit of quantifying the amount of particles in a substance.
So;
Mass of a substance = number of moles x molar mass
Molar mass of F = 19g/mol
Now;
Mass of F = 20 x 19 = 380g