What type(s) of intermolecular forces exist between PH3 and CO32-?

A sample containing 2.00 x 10-2 mmol of Cu(NO3)2 and 3.00 x 10-2 mmol of K2SO4 is passed through an anion-exchange column. Calculate the volume of 0.0100 M HCl needed to titrate the eluate.

What is the change of pH upon addition of 10.0 ml of HCl 3.0 M to 750. ml of the following:

- pure water

- 0.1 M formic acid

- 0.1M acetate of sodium

- a buffer made of 0.1M potassium nitrite and 0.08 M nitrous acid.

Do you expect the ionization energies of anions of group 17 element to be lower than, higher than, or about the same for neutral atoms of the same group?

use the method of half reactions to balance the following equations: a) CrI3 (s) + Cl2 (g) ----> CrO 2-4 (aq) + IO-4 (aq) (basic) b) C2H5OH (aq) + I-3 (aq) ----> CO2 (g) + CHO-2 (aq) + CHI3 (aq) + I- (aq) (acidic)

Consider the base­catalyzed​reaction OCl­ (aq) + I­ (aq) → OH­ (aq) + Cl­ (aq) Determine the rate law and the rate constant, using the following initial rate data. (Hint: base­catalyzed​indicates that OH ­ affects the rate despite appearing as a product.)

How do I calculate the theoretical yield of the product in grams and mol?

Predict the effect of the following changes on the reaction in which SO3 decomposes to form SO2 and O2. 2 SO3(g)  2 SO2 (g) + O2 (g) Ho = 197.78 kJ

(a) Increasing the temperature of the reaction.

(b) Increasing the pressure on the reaction.

(c) Adding more O2 when the reaction is at equilibrium.

(d) Removing O2 from the system when the reaction is at equilibrium.

(e) Adding N2 gas to the reaction mixture

4. How do you decide whether to use enough hot water to dissolve acetanilide or enough to dissolve phenacetin?

5. If someone mixed sand into your unknown sample so you could not separate the grains of sand from the unknown solid, how could you separate them? Would the same action work if sucrose was mixed into your unknown?

6. Why would you allow the filtered liquid to cool slowly? What would happen if you did not allow slow cooling?

7. Why and when would you put the recrystallizing solution in an ice bath?

A 25.0 mL sample of 0.100 HClO4 is titrated with a 0.100 M NaOH solution. What is the pH after the addition of 10.0 mL of NaOH? (HClO4 is a strong acid)

200.0 mL of 1.5 x 10^^-3 M Cu(NO3)² is mixed with 250.0 mL of 0.20 M NH3. The overall formation constant for the formation of the [Cu(NH3)⁴]²+ complex is 1.7·10¹³. (8 points)
a) What is the [Cu2+] at equilibrium?
b) Does CuS precipitate with a concentrated H2S out of this solution at pH=6? The Ksp for CuS is 8·10^-37.

Give examples from the literature of metal complexes with coordination numbers (CN) of 2, 3, 4, 5, 6, 7 and 8 (formula, structure). What is the highest Coordination Number found for a metal ion?

Given the following data:

3FeO(s) + CO2(g) → Fe3O4(s) + CO(g) ΔH° = -18.0 kJ

FeO(s) + CO(g) → Fe(s) + CO2(g) ΔH° = -11.0 kJ

Fe2O3(s) + 3CO(g) → 2Fe(s) + 3CO2(g) ΔH° = -23.0 kJ

Calculate ΔH° for the reaction: 3Fe2O3(s) + CO(g) → 2Fe3O4(s) + CO2(g)

What would be the effect of each of the following sources of error in the reaction between Mg and HCl? Would they result in a high, low, or unaffected value for the heat of reaction? Why?

A. The calorimeter absorbs heat.
B. The thermometer reads 2 °C low at all temperatures.
C. The actual molarity of the HCl is slightly higher than reported on the bottle.

D. The mass of the filter paper was not subtracted in the determination of ∆H1.

What is the osmotic pressure, in torr, of a 3.00% solution of NaCl in water when the temperature of the solution is 45 ºC? Enter your answer scientific notation.