Radioactive phosphorus is used in the study of biochemical reaction mechanisms because phosphorus atoms are components of many biochemical molecules. The location of the phosphorus (and the location of the molecule it is bound in) can be detected from the electrons (beta particles) it produces. 32P → 32S + e− 15 16 Rate = k [32P], where k = 4.85 ✕ 10−2 day−1 What is the instantaneous rate (in mol/L/d) of production of electrons in a sample with a phosphorus concentration of 0.0031 M?

Respuesta :

Answer:

Rate = 1.50x10⁻⁴ mol*day⁻¹*L⁻¹

Explanation:

The equation of the study of biochemical reaction mechanisms is:

³²P  →  ³²S + e⁻  

The rate of that reaction is:

Rate = k [³²P]

where k: is the rate constant and [³²P]  is the concentration of ³²P.  

Hence, having that: k = 4.85x10⁻² day⁻¹ and, [³²P] = 0.0031 M, the instantaneous rate of production of electrons is:

Rate = k [³²P]  = (4.85x10⁻² day⁻¹)(0.0031 mol*L⁻¹) = 1.50x10⁻⁴ mol*day⁻¹*L⁻¹

Therefore, the instantaneous rate of production of electrons is 1.50x10⁻⁴ mol*day⁻¹*L⁻¹.

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