The main difference between the 3 isotopes of hydrogen are the number of neutrons in the nucleus. Hydrogen has no neutrons, Deuterium has one neutron, and tritium has two neutrons. All three have one proton and one electron.
Answer:
Nonmetal
Explanation:
A substance in the chart is a nonmetal because nonmetals are not water soluble, they are poor conductors of heat and electricity and they do not have high melting points like metals.
Answer:
AMEN NNNNNNNNNNNNNNNNNNNNNNNN
Answer: 1)
Equilibrium constant is defined as the ratio of the product of concentration of products to the product of concentration of reactants each term raised to their stochiometric coefficients.
where [] = concentration in Molarity=
Thus
As the value of K is greater than 1, the reaction is product favored.
2)
3)
4) Reactions which do not continue to completion are called equilibrium reactions as the rate of forward reaction is equal to the rate of backward direction.
Answer:
(E) -1835 kJ
Explanation:
Use Hess law to answer this question by manipulating algebraically the equations :
Eq .1 PCl5(s) → PCl3(g) + Cl2(g) ΔH°rxn = +157
Eq.2 P4(g) + 6 Cl2(g) → 4 PCl3(g) ΔH°rxn = -1207 kJ
to arrive to the equation in our problem:
P4(g) + 10 Cl2(g) → 4PCl5(s) ΔH°rxn = ?
Notice PCl₅ is the product in our equation and in Eq. 1 is a reactant so we need to reverse it. We need also to multiply it by 4 since that is the number required in the question.
P₄ in equation 2 is a reactant and is also a reactant in our desired equation also it is 1 mol in both. That is telling us to leave it as it is and we can then proceed to add it the the -4 times Eq1 and check everything is right when we add them together.
4PCl3(g) + 4Cl2(g) → 4PCl5(s) ΔH°rxn = -4 x (157 kJ) (change the sign)
P4(g) + 6 Cl2(g) → 4 PCl3(g) ΔH°rxn = -1207 kJ
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P4(g) + 10 Cl2(g) → 4PCl5(s) ΔH°rxn = -4 x (157 kJ) + -1207 kJ
ΔH°rxn = -1835 kJ
See how the PCl3 cancel and the Cl add correctly.