Answer / balakrishnan

There is no need to use pyridine for analysing the acetone
moisture. we can use methanol in presence of imidazole as a
base.

2. Two grams of Benzoic acid are dissolved in 200 ml of water and extracted with 200 ml of diethyl ether. The distribution coefficient of benzoic acid is 100, and its dissociation constant is 6.5 10-5. Calculate the distribution ratio (D) of benzoic acid at pH 2, 5, and 6. 3. Calculate D at pH 2 to 10 (1 unit apart) in the above problem, and plot D versus pH.

0 Answers  

---

what is the diffrence between absorbance and absorption in the beer,s lamber formula ?

2 Answers  

---

WHAT IS THE DIFFERENT BETWEEN PURITY, POTENCY AND ASSAY

6 Answers   Glochem, Hetero,

---

What is difference between Potency & purity

3 Answers  

---

Column selection in HPLC method development?

1 Answers  

---

Weight balance variation limit during analysis

7 Answers   Amneal Pharmaceuticals,

---

what is internal standard define

2 Answers   Apex, Coromandel International Limited, Hikma Pharmaceuticals, IPCA,

---

what is the defination of calibration & verification?

9 Answers   Divis Laboratories,

---

What is the purpose & importance of using the polystyrene film in ir calibration?

3 Answers   Vimta Labs,

---

WHAT IS DIFFERENCE B/W MALTINGRANG/DSC

1 Answers   Glochem,

---

On which pharmacopoeia basis we can calibrate instruments like HPLC,GC,UV,DISSO,IR etc...

9 Answers   Cipla, Laurus, Micro Labs,

---

why we use only vanilline , acetanilide,& caffeine For the Calibration of melting point appartus?

7 Answers   Reddy Labs,

---