Answer:
2.49 × 10⁶ molecules
Explanation:
Given data
We can calculate the moles of gas using the ideal gas equation.
P × V = n × R × T
n = P × V / R × T
n = 9.25 × 10⁻¹⁴ atm × 1.10 × 10⁻³ L / (0.0821 atm.L/mol.K) × 300.0 K
n = 4.13 × 10⁻¹⁸ mol
1 mole contains 6.02 × 10²³ molecules (Avogadro's number). The number of molecules in 4.13 × 10⁻¹⁸ moles is:
4.13 × 10⁻¹⁸ mol × (6.02 × 10²³ molecule/1 mol) = 2.49 × 10⁶ molecule
Explanation:
Reaction equation is as follows.
Here, 1 mole of produces 2 moles of cations.
= 1.16 M
= 0.58 M
The sulphite anion will act as a base and react with to form
and
.
As,
=
=
According to the ICE table for the given reaction,
Initial: 0.58 0 0
Change: -x +x +x
Equilibrium: 0.58 - x x x
So,
x = 0.0003 M
So, x = = 0.0003 M
= 0.58 - 0.0003
= 0.579 M
Now, we will use = 0.0003 M
The reaction will be as follows.
Initial: 0.0003
Equilibrium: 0.0003 - x x x
=
=
Therefore,
As, x <<<< 0.0003. So, we can neglect x.
Therefore,
=
x =
x = =
=
= M
Thus, we can conclude that the concentration of spectator ion is M.