Answer:
1.4 * 10^-3
Explanation:
The equilibrium expression can be written as follows:
Keq = P [HD]^2/[ P[H2] * P[D2]]
Where P is pressure
1.80= (2.7 * 10^-3)^2 / ( 1.1 * 10^-3 * P[H2])
P[H2] = [2.7 * 10^-3]^2 / [1.8 * 1.1 * 10^-3]
P[H2] = 1.4 * 10^-3 atm
Because their valence shell have stable electrons so they can't gain or loose electrons.
in ionic bonds the elements should gain or loose electrons
Answer:
HClO 7.54
Explanation:
Hypochlorous acid (HClO) is a weakest acid because the pKa value of Hypochlorous acid is very high among the options given in the activity. pKa is a method which is used in order to identify the strength of an acid. The higher the value of pKa of a liquid, lower the strength of an acid while lower the value of pKa of chemical, higher the strength of an acid. In the options, HClO2 is a strong acid due to high lower pKa value.
Answer:
C) 
Explanation:
pH is defined as the negative logarithm of the concentration of hydrogen ions.
Thus,
pH = - log [H⁺]
The expression of the pH of the calculation of weak acid is:-
Where, C is the concentration = 0.5 M
Given, pH = 2.94
Moles = 0.100 moles
Volume = 1.00 L
So, 
C = 0.100 M
The solution is as follows:
Important data:
*0.01 M solution = 0.01 moles <span>disodium ethylenediaminetetraacetate/ L solution
*1 L = 1000 mL
*Molar mass = 372/24 g/mol
Stoichiometric calculation:
0.01 mol/L * (1 L/1000 mL) * 500 mL * </span><span>372.24 g/mol = 1.8612 g
Therefore, you would need 1.8612 grams of </span>disodium ethylenediaminetetraacetate.
