The electronic configuration of ‘N’ atom is 2, 5 and to have Octet in the valence shell it requires three more electrons.When two nitrogen atoms approach each other, each atom contributes 3 electrons for bonding.There are six electrons shared between two nitrogen atoms in the form of three pairs.Therefore, there is a triple bond between two nitrogen atoms in $N _{ 2 }$ molecules.
Answer:
1) The hydrogen-ion concentration is 0.001 M and pH of the solution is less than 7 which means that the solution is acidic.
2) The acid dissociation constant of a weak monoprotic acid is .
Explanation:
1) Concentration of hydroxide ions =
The pOH of the solution:
pH + pOH = 14
pH = 14 - pOH = 14 - 11 = 3
The pH of the solution is given as:
The hydrogen-ion concentration is 0.001 M and pH of the solution is less than 7 which means that the solution is acidic.
2)
Dissociation on weak monoprotic weak acid is given by :
Initially
0.5 M 0 0
At equilibrium
(0.5-x) x x
Given , hydrogen ions concentration =
The expression of a dissociation constant is given as:
The acid dissociation constant of a weak monoprotic acid is .
Answer:
-3.1 m/s²
Explanation:
Given data
- Initial speed (v₀): 20 m/s
- Final speed (vf): 0 m/s (the automobile stops)
- Elapsed time (t): 6.5 seconds
- Acceleration (a): to be determined
We can determine the acceleration of the automobile using the following kinematic expression.
a = Δv / t
a = vf - v₀ / t
a = (0 m/s - 20 m/s) / 6.5 s
a = -3.1 m/s²
Since nonmetals have five, six, or seven electrons in their valence shells, it takes less energy to gain the necessary electrons, and therefore form anions.