Sodium is in group 1 while magnesium is in group 2. That's why they form different ions. It's based on what groups the element is in.
Answer:
Equilibrium concentration of Br₂ = 0.02 M
Explanation:
Moles of hydrogen gas :
Given, Mass of H₂ = 1.374 g
Molar mass of H₂ = 2.016 g/mol
The formula for the calculation of moles is shown below:
Thus,
Moles of Bromine gas :
Given, Mass of Br₂ = 70.31 g
Molar mass of Br₂ = 159.808 g/mol
The formula for the calculation of moles is shown below:
Thus,
Considering the ICE table for the equilibrium as:
H₂(g) + Br₂(g) ⇌ 2HBr(g)
t = o 0.68 0.44 0
t = eq -x -x +2x
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Moles at eq: 0.68-x 0.44-x 2x
Given that: At equilibrium the vessel is found to contain 0.566 g of H₂
Moles = 0.566 g / 2.016 g/mol = 0.28 moles
Thus, 0.68 - x = 0.28
x = 0.40 moles
Volume = 2.00 L
Equilibrium moles of Br₂ = 0.44 - 0.40 moles = 0.04 moles
<u>Equilibrium concentration of Br₂ = 0.04 moles/ 2 L = 0.02 M</u>
Answer:
The reaction is reactant-favored
Explanation:
If we take a look at the reaction equation, Zn2+ (aq) + Co (s) Zn (s) + Co2+ (aq) and consider the reduction potential of the species involved
Zn^2+(aq)/Zn(s)= -0.76
Co^2+(aq)/Co(s)= -0.28
It can easily be seen that the reduction potential of zinc is more negative than that of cobalt. Hence the electrochemical reaction is not spontaneous as written but will greatly favour the reverse reaction.
The answer is D. This is because liquids take up the shape of the container they are in, so it is never definite. Where as solids stay the same shape.
Answer:
The both refer to the same term.
Explanation:
The heat of neutralization also called the enthalpy of neutralization. It is the heat evolved or the enthalpy change when one equivalent of acid reacts with one equivalent of a base under standard conditions to form salt and water only.