4 A(g) + 3 B(a q) → 5 C(g) + 2 D(g) + heat In which direction will the reaction shift if pressure is increased?   Question 15 options: a. It will not shift b. It will shift toward the products. c. It will shift toward the reactants.

QUESTION 19 Consider the following information, choose all of the statements that are false. k] H2(g) + S(s) = H,S(g) K=7.8x105 AH= -20.17 mol O Adding a catalyst will cause the concentration of H25 to increase. O Decreasing the volume of the reaction vessel will cause the concentration of H2 to increase. O Products are predominant. OIncreasing the reaction temperature will cause the concentration of H2 to increase. O Adding more H25 will cause the concentration of H2 to decrease. O Removing S will cause the concentration of H2 to increase.

Consider the following equilibrium reaction: 2 NO (g)   +   O2 (g)   ⇋⇋   2 NO2 (g) What is the Kc expression? Select one: a. Kc=[NO2][NO][O2]Kc=[NO2][NO][O2] b. Kc=[NO2]2[NO]2+[O2]Kc=[NO2]2[NO]2+[O2] c. Kc=[NO]2[O2][NO2]2Kc=[NO]2[O2][NO2]2 d. Kc=2∗[NO2]2∗[NO][O2]Kc=2∗[NO2]2∗[NO][O2] e. Kc=[NO2]2[NO]2[O2]

ook at the reaction below and state which direction the reaction would shift:   You remove mercury(II) oxide, HgO, from the reaction.   2HgO (s) <=> 2Hg (l) + O2 (g) Explain your reasoning

For the exothermic reaction 4 NH3(g) +7 02(g)- => 4 NO2(g) + 6 H20(g) which change will increase the quantity of NO2 in the mixture? O A. increasing temperature OB. decreasing container volume OC. adding Ne(g) O D. adding H20(g) O E. adding a catalyst

please answer all parts!