Hydrogen chloride or most commonly known as hydrochloric acid and
muriatic acid is a diatomic compound that consists of hydrogen and chlorine. It
is prepared industrially by the combustion of hydrogen, H2, in chlorine, Cl2.
H2 + Cl2 -> 2HCl. There are also many metallic chlorides that release
hydrogen chloride gas, HCl, when warmed with concentrated sulfuric acid, H2SO4.
Mostly, it is prepared by heating it with sulfuric acid and sodium chloride.
The reaction is NaCl + H2SO4 -> HCl + NaHSO4. Adding sulfuric acid enables the reaction to proceed further and it acts as a catalyst in the reaction.
Question:
1. (NH)2CrO
a) Number of moles of H:
b) Number of moles of N:
Answer:
a) Number of moles of H: 2
b) Number of moles of N: 2
Explanation:
The is ammonium Chromate which is monoclinic and yellow Crystal that is formed due to the reaction of ammonium Hydroxide and ammonium di-chromate. It is used as catalyst, corrosion inhibitor as well as analytical inhibitors.
Question:
2. Ag.SO.
a) Molar Mass:
b) Percent Composition of Ag:
c) Percent Composition of S:
d) Percent Composition of O:
Answer:
a) Molar Mass: 155.93 Kg
b) Percent Composition of Ag: 69%
c) Percent Composition of S: 20.5%
d) Percent Composition of O: 10.2%
Explanation:
Molar mass = molar mass of Ag + molar mass of S + molar mass of O
=>107.87+32.06+16
=> 155.93 Kg
Percent Composition of Ag
=
=
= 0.69 \times 100
= 69%
Percent Composition of S:
=
=
= 0.205 \times 100
= 20.5%
Percent Composition of O:
=
=
= 0.102 \times 100
= 10.2%
Answer:
B) 6.9 × 10⁻⁹
Explanation:
HZ is a weak acid that ionizes according to the following generic equation.
HZ(aq) ⇄ H⁺(aq) + Z⁻(aq)
First, we have to calculate the concentration of H⁺ using the pH.
pH = -log [H⁺]
[H⁺] = antilog -pH = antilog -4.93 = 1.17 × 10⁻⁵
Then, we have to calculate the initial concentration of the acid (Ca).
Finally, we can calculate the acid dissociation constant (Ka) using the following expression.
Im guessing here but i think it's true
Here are the options to the question:
A) The kinetic energy of gas particles will increase.
B) The kinetic energy of gas particles will decrease.
C) The kinetic energy of gas particles will remain unchanged.
D) The gas particles will have no kinetic energy.
<span>E) The kinetic energy of gas particles will be transferred to the container.
</span>
The best answer is:
E. The kinetic energy of gas particles will be transferred to the container
At temperatures near Zero<span> K that is −273.15 °C and −459.67 °F, nearly all molecular motion ceases and ΔS = </span>0<span> for any adiabatic process, where S is the entropy.</span>