Sn + 2I2 ---> SnI4 (Ac2O,AcOH,reflux on arrow) SnI4 + 2PPh3 ---->(PPh3)2SnI4 (CHCl3 on arrow) SnI4 + (Me2SO)2 ----> SnI4(Me2SO)2 (CH2Cl2 on arrow) Need mechanisms for these reactions if there is any.
Decrease in stability of stannic halides by complexing with phosphines and sulfoxides
Why are stannic halides rendered more inert (towards hydrolysis) by complexing with phosphines and sulfoxides?
Citric acid is concentrated in citrus fruits and plays a central matabolic role in nearly every animal and plant cell. How many moles of citric acid are in 1.90 qts of lemon juice *d=1.09 g/ml* that is 6.62% citric acid by mass? *Ive tried this problem 4 times and cant figure out the answer...Please post the stoich... set ...continues
When compound Y is heated it decomposes to the element X and hydrogen gas. Decomposition of 1 g of y yeileds 0.0250 mol gas. Calculate the possible molar mass values for x.
Ccalculations with dimensional analysis and correct significant figs
Calculate the number of mL in a volume of 1.000ft^3 With equivalence statements: 1ft=12 inches; 1 inch = 2.54 cm; 1 cm^3 = 1 mL I am not sure if I cube the whole equation or not?
If an aluminum sphere has a mass of 23.01 grams and was heated to 137.0 Celsius and lowered into a cup containing 20.00 mL of water at 21.0 Celsius. The final temperature of the water and the sphere was 44.0 Celsius assuming no heat was loss calculate the specific heat of the aluminum in the sphere. C h2o =4.184J/g-0celsius ...continues
In a double replacement what comes from or forms from ___Cu(NO3)2 (aq) +__ NaOH (aq) What about __Fe(NO3)3 (aq) + __NaOH (aq)?
Assume we have a 1000L tank of water and very dilute weak acids. To this tank we add and dissolve 260 grams AL2(SO4)3 (solid granules) --- the resultant pH is 4. The intention is to form AL(OH)3 solids/particles in this reaction. Question 1: How much Al(OH)3 will be formed in this reaction at pH=4.0 Question 2: If the pH w ...continues
Calculating mass of sulfuric acid to affect pH change?
I have a 2 part question concerning the use of H2SO4 to adjust the pH of a solution: 1. How many grams per liter of H2SO4 is required to adjust the pH of a solution from 3.8 to 2.8 assuming the sulfuric acid fully ionizes? 2. If in reality however, the actual sulfuric acid ionization/dissociation is a 2 step process and no ...continues
pH adjustment of a solution with NaOH or Ca(OH)2?
Assume you have a 64000L volume of solution (predominantly water) with a pH of 4.03. 1. How much NaOH would be required to raise the pH to 5.5? 2. Or, if using Ca(OH)2 --- how much calcium hydroxide would be required to raise the pH of this solution to 5.5? In each case, assume full ionization of the base.
