It’s a practical of chemistry. I have The results in a different file that I can send once I have...

Question

It’s a practical of chemistry. I have The results in a different file that I can send once I have que quote. The subject is Spectrophotometric Analysis.

Yasodharan · Accepted Answer

Spectrophotometric Analysis of an Analgesic Preparation  
Result and Calculation:
Using spreadsheet, the recorded values are computed as below,
	Aspirin
	
	
	
	
	Concentration (cm3)
	Abs(297)
	Abs(272)
	
	
	
	
	0.25
	0.0459
	0.009
	
	 
	 
	Absorptivity
	0.5
	0.0474
	0.0011
	
	Aspirin
	297
	0.0602
	1
	0.1037
	0.0111
	
	
	272
	0.0056
	1.5
	0.1115
	0.0124
	
	 
	 
	 
	Tablet
	1.2323
	0.484
	
	Caffeine
	297
	0.0114
	Caffeine
	
	
	272
	0.3069
	Concentration (cm3)
	Abs(297)
	Abs(272)
	
	
	
	
	0.25
	0.0284
	0.4049
	
	
	
	
	0.5
	0.0299
	0.4149
	
	
	
	
	1
	0.0308
	0.5873
	
	
	
	
	1.5
	0.0437
	0.7712
	
	
	
	
	Tablet
	1.3294
	0.5691
	
	
	
	
Plot is
Simultaneous equation is,
Solving for (1) & (2) we get,
The amount of each in analgesic tablet is,
Discussion:
1)  
a) The compound/molecule of aspirin and caffeine in distilled water shows linear peak absorbance due to clear solution which is not affected by parameter density and temperature hence linear spectral line is observed on increase in dissolved quantity.

It’s a practical of chemistry. I have The results in a different file that I can send once I have que quote. The subject is Spectrophotometric Analysis.

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