Show the calculation of the mass (grams) of a 14.5 liter gas sample with a molecular weight of 82 when collected at 29°C and 740
1 answer:
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Answer:
The most appropriate structure given the sparse spectral data is<u><em> 4-acetyl benzoic acid (see attached).</em></u>
Explanation:
It is difficult to accurately elucidate the structure of this compound without its chemical formula. But from the 1H NMR spectral data shows a total of 8 hydrogen atoms:
- 12.71 (1H. s) - confirms presence of carboxylic acid proton, C=O-OH
- 8.04 (2H, d) - confirms aromatic hydrogen
- 7.30 (2H, d) - confirms aromatic hydrogen
- 2.41 (3H,s) - confirms C=C hydrogen or ketone O=C-RCH3
The attached files show the structure and the neighboring hydrogen atoms.
<u>The most likely structure i 4-acetyl benzoic acid</u>
Answer : The mass of calcium sulfate precipitate will be, 6.12 grams
Solution :
First we have to calculate the moles of and
.
As, 0.05 moles of is mixed with 0.05 moles of
, it gives 0.05 moles of calcium sulfate.
Now we have to calculate the solubility of calcium sulfate.
The balanced equilibrium reaction will be,
The expression for solubility constant for this reaction will be,
Now put the value of in this expression, we get the solubility of calcium sulfate.
Now we have to calculate the moles of dissolved calcium sulfate in one liter solution.
Now we have to calculate the moles of calcium sulfate that precipitated.
Now we have to calculate the mass of calcium sulfate that precipitated.
Therefore, the mass of calcium sulfate precipitate will be, 6.12 grams
The solution of which contains of PH 3 called acidic medium which is more stronger acid called HCl when reacts to the stronger base base NaOH forms the acid base reaction .
According to acid base equation you consider ph5 as PH 9 if you understand it then tell me below
