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When a 0.218 mol sample of hydrogen iodide was heated in a flask of volume Vdm3 the following equilibrium was established at 700k 2Hl(g) > H2(g) + l2(g) The equilibrium mixture was found to contain 0.023 mol of hydrogen A) calculate the number of moles of iodine and the number of moles of hydrogen iodide in the equilibrium mixture B) write an expression for Kc for the equilibrium C) state why the volume of the flask need not be known when calculating a value for Kc D) calculate the value of Kc at 700k E) calculate the value of the Kc at 700K for the following equilibrium H2(g)+ l2(g) > 2Hl(g)
Which one of the following aqueous solutions will have the lowest boiling point temperature. (Explain or show work) All numbers are subscripts - I didn't know how to type subscripts on here.
Question- If a buffer solution is 0.100 M in a weak acid (Ka=3.8 x 10^-5) and 0.480 M in its conjugate base, what is the pH
Examine the label of any vegetable oils, solid shortening, margarine, or butter you might have on hand. Identify the oil or fat and report the level of saturated, mono-unsaturated
Describe how you would prepare 1liter of 0.2M solution of monobasic sodium phosphate and 1 liter of 0.2M dibasic sodium phospate ( FW for monobasic 137.99 and FW for anhydrous dibasic 141.96
"Hard" water contains relatively high concentrations of dissolved calcium ions. Calculate the solubility (in molarity) of CaHPO4·2H2O at 25°C in hard water that initially contains 95 mg/L of Ca2+
The acid forms two ions, HC2O4- and C2O42-, by the sequential loss of H+ ins. Draw lewis structures for the three species and comment on the relative lengths and strengths of their carbon-oxygen bonds.
Gaseous ammonia (NH3, 2.00 L, 703.8 torr, 23.8C) reacts with aqueous sulfuric acid (H2SO4, 0.500M, 175mL) to produce solid ammonium sulfate. 4.8275 g of product is isolated.
The total pressure for a mixture of N2O4 and NO2 is 1.5 atm. If Kp=7.1 (at 25 degrees C) calculate the partial pressure of each gas in the mixture. 2NO2(g) N2O4(g)
In preparation of p-iodonitrobenzene, the reaction is driven forward by the formation of N2 gas for two reasons. Reason number one is thermodynamic and reason number two is kinetic. Explain both of these reasons
How many liters of CH4 (g), measured at 23.4C and 768mmHG, must be burned to provide the heat needed to vaporize 3.78 L of water at 100C? DeltaHcomb= -8.90x10^2 KJ mol CH4. For H2)(l) at 100 C, d= 0.958 g cm and deltaHvap=40.7KJ mol.
What is the pH of a solution prepared with 25 ml of 0.134 sodium acetate and 25 ml of 0.200 M of acetic acid
1.2504 grams of X is dissolved in a 100mL of .05M sulfuric acid and diluted by a factor of a 100 with deionized water. What is the concentration of X
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