Answer: In octet state.
Explanation: For noble gases they are stable in state since their outer shell contain fully occupied having 8 electrons.
Answer:
The correct answer is 2.1
Explanation:
The neutralization reaction involved in the titration is between a strong acid (HCl) and a strong base (NaOH), as follows:
HCl + NaOH → NaCl + H₂O
According to this, 1 equivalent of HCl reacts with 1 equivalent of NaOH. The equivalence point is the point at which the amount of NaOH added reacted completely with the amount of HCl.
moles of acid = moles of base
moles HCl = moles NaOH
Ca x Va = Cb x Vb
Ca = (Cb x Vb)/Va = (0.16 M x 17 mL)/(350 mL) = 7.8 x 10⁻³ M
Since HCl is a strong acid, we calculate the pH of the solution directly from the concentration of acid:
[H⁺]= Ca = 7.8 x 10⁻³ M
pH = -log [H⁺] = -log (7.8 x 10⁻³ M) = 2.11
Therefore, the pH of the HCl solution is 2.1
Tectonic plate shifting...
Answer: B) 10 ml
Explanation:
According to the dilution law,
where,
= molarity of stock solution = 1.0 M
= volume of stock solution = 2.0 ml
= molarity of dilute solution = 0.20 M
= volume of diluted solution = ?
Putting in the values we get:
Therefore, final volume reading is 10 ml