Chemistry, 07.03.2020 03:26 BELLE6284

1. Write the mathematical expression for the reaction quotient, Qc, for each of the following reactions: (a) N2(g)+3H2(g) ⇌ 2NH3(g) (b) 4NH3(g)+5O2(g) ⇌ 4NO(g) + 6H2O(g) (c) NH4Cl(s) ⇌ NH3(g) + HCl(g) (d) 2Pb(NO3)2(s) ⇌ 2PbO(s) + 4NO2(g) + O2(g) (e) S8(g) ⇌ 8S(g)

Answers: 1

Show answers

Answers

Answer from: naomi5321

(a) Qc = [NH₃]² / [N₂] × [H₂]

(b) Qc = [NO]⁴ × [H₂O]⁶ / [NH₃]⁴ × [O₂]⁵

(d) Qc = [NO₂]⁴ × [O₂]

(e) Qc = [S]⁸ / [S₈]

Explanation:

The reaction quotient (Qc) is equal to the product of the concentrations (at any time) of the products raised to their stoichiometric coefficients divided by the the product of the concentrations (at any time) of the reactants raised to their stoichiometric coefficients. In only includes gases and aqueous species.

(a) N₂(g) + 3 H₂(g) ⇌ 2 NH₃(g)

Qc = [NH₃]² / [N₂] × [H₂]

(b) 4 NH₃(g) + 5 O₂(g) ⇌ 4 NO(g) + 6 H₂O(g)

Qc = [NO]⁴ × [H₂O]⁶ / [NH₃]⁴ × [O₂]⁵

Qc = [NH₃] × [HCl]

(d) 2 Pb(NO₃)₂(s) ⇌ 2 PbO(s) + 4 NO₂(g) + O₂(g)

Qc = [NO₂]⁴ × [O₂]

(e) S₈(g) ⇌ 8 S(g)

Qc = [S]⁸ / [S₈]

Answer from: Quest

answer: the primary difference between a hypothesis and a theory is that b hypothesis is falsifiable, but a theory has been proven to be correct. theory is an explanation of something that is happening but hypothesis is a guess of something that can happen

explanation:

Answer from: Quest

For cyclohexane compounds drawn in a chair conformation: -axial bonds are vertical -equatorial bonds are parallel to two bonds within the ring. thus, as i assume the chair conformation is drawn: -the x group is in an axial position, as are the five other vertical bonds. -three axial bonds are on the top face of the ring -the other three axial bonds are on the bottom face the position of the second substituent on each ring carbon is equatorial. gauche groups must be on an adjacent carbon such as carbon 6 and carbon 2, and also gauche groups are rotated by 60 degrees relative to each other. drawing the newman projections for c1–c2 and c1–c6 aids in visualizing the groups that are gauche to the y group on c1. click this link and watch some academic videos that may you more understand the topic

Another question on Chemistry

Chemistry, 21.06.2019 18:00

Which of the following is a compound? a.carbon b.oxygen c.hydrogen d.water

Answers: 2

Answer

Chemistry, 21.06.2019 19:30

The molecular formula for caffeine is cshion402. which of the following elements is not found in caffeine?

Answers: 1

Answer

Chemistry, 22.06.2019 03:20

Which type of substance ionizes partially and gives off hydrogen ions when dissolved in water? a. strong acid b. strong base c. weak acid d. weak base

Answers: 1

Answer

Chemistry, 22.06.2019 07:30

Calculate the ratio of h+ ions to oh– ions at a ph = 7. find the concentration of h+ ions to oh– ions listed in table b of your student guide. then divide the h+ concentration by the oh– concentration. record this calculated ratio in table a of your student guide. compare your approximated and calculated ratios of h+ ions to oh– ions at a ph = 7. are they the same? why or why not? record your comparison in table a. what is the concentration of h+ ions at a ph = 7? mol/l what is the concentration of oh– ions at a ph = 7? mol/l what is the ratio of h+ ions to oh– ions at a ph = 7? : 1

Answers: 1

Answer

You know the right answer?

1. Write the mathematical expression for the reaction quotient, Qc, for each of the following reacti...

Questions