Answer / praveen kumar (ipca_ranu)

Pure water has a neutral pH=7. Because of this, the concentration of acid in solution = concentration of base in solution. Therefore, [H3O+]=[OH-]. We have to memorize that Kw=10^-14, but once we memorize this it becomes clear that for neutral water [H3O+]=[OH-]=10^-7 because the product of both equals Kw. Hope this helps!

Praveen kumar
IPCA
Sr. Excutive

in stress study if your api not soluble in hcl naoh h2o2 then what require to do?

0 Answers  

---

What is a difference between potency and purity?

0 Answers  

---

does water content by KF will calculate only external moisture absorbed or the ligand ? (for ex copper sulphate pentahydrate)

0 Answers   NA,

---

What is the principle of Thermal conductivity detector and FID?

0 Answers   Cipla,

---

Can we interpret accuracy from linearity in method validation?

1 Answers   Dr Reddys, Lupin,

---

stability study is going on up to 3years for famotidine-USP but the pharmacopeia is revised and tlc test is replaced with hplc test. At the 4th year frequency the product is failed in hplc test .how can i assain the expiry or retest date and can i stop or continue the programme?

2 Answers   Nakoda Chemicals,

---

What is difference between FID and TCD in gas chromatography

1 Answers   Cipla, VPCPL,

---

why SGF media used for dissolution . What is the use of it .can we use other media of lower pH instead ot this?

1 Answers  

---

if peak get problamatic then what require to do?

0 Answers  

---

Identify problem faced when mass spectroscopy is used with HPLC system ?

0 Answers   College School Exams Tests,

---

Why forced degradation studies are performed in hplc method validation?

6 Answers   Apex,

---

If i performing one analysis on C8column then the same analysis done on C18 column then what will happen about Rt;Resulution;Peak shape Explain ?

1 Answers  

---