The equilibrium constant for the reaction ni2+(aq) + 6 nh3(aq) ⇌ ni(nh3)6 2+(aq) is kf = 5.6 × 108 at 25°c. (a) what is δg o at this temperature? (b) if standard-state concentrations of reactants and products are mixed, in which direction does the reaction proceed? (c) determine δg when [ni(nh3)62+] = 0.010 m, [ni2+] = 0.0010 m, and [nh3] = 0.0050 m. in which direction will the reaction proceed to achieve equilibrium? (a) × 10 j/mol (enter your answer in scientific notation.) (b) to the right. to the left. (c) × 10 j/mol (enter your answer in scientific notation.) to the right. to the left.

(a) -49.9 kJ/mol;

(b) To the right;

(c) 34.6 kJ/mol

Explanation:

(a) For this reaction, since it's at equilibrium and standard states, we know that we can apply the equation:

Substituting the given variables:

(b) Notice that this reaction is spontaneous, since . This means reaction spontaneously proceeds to the right side. Besides, K > 1, this means products dominate over reactants, so reaction proceeds to the right.

(c) Given the expression of the formation constant, we can use the same expression to calculate the reaction quotient at non-standard conditions:

Now, notice that . In this case, we have an excess of the products, this means reaction will shift to the let left to restore the equilibrium.

Calculate:

practical process described pest part of scientific investigation.

because practical knowledge is powerful then therotical knowledge.

the best answer is d because the strong cohesion is caused by the ability of water molecules to undergo hydrogen bonding.

a is incorrect because when water solidifies, it becomes   ice, which expands and occupies a bigger volume for the same mass of water in its liquid state.

b is incorrect because water has high surface tension. besides bonding to itself it hydrogen bonds to other molecules at the top decreasing possibility for breaking of attractive forces.

c is incorrect because the water molecule has oxygen which is highly electronegative and so pulls the electron pair towards itself creating a dipole moment, making the molecule polar.

e is incorrect because water has strong adhesion, ability to stick to other molecules such as glass because of this molecules having stronger hydrogen bonding than water.