Why we have to take 42gm of sodium hydroxide instead of 40gm for preparation of 1M Sodium hydroxide as per Pharmacopia? Whether it means the formula for calculating molarity was wrong?
Answers were Sorted based on User's Feedback
Answer / phani kumar
In 1molar NaOH solution we take 42gms NaOH in 1000ml water.why because NaOH pellets having 97% purity
Is This Answer Correct ? | 26 Yes | 6 No |
Answer / pravin admane
If Sodium hydroxide having 97 % purity then obtained wt is 41.2 not 42 gm
Is This Answer Correct ? | 2 Yes | 0 No |
Answer / ashok kumar
In 1molar NaOH solution we take 42gms NaOH in 1000ml water.why because NaOH pellets having 100% purity
Is This Answer Correct ? | 0 Yes | 14 No |
why sucrose is used for polarimeter calibration
What id the resolution factor
What is the major difference b/w Drift and Noise
4 Answers Aurobindo, Dr Reddys, Reddy Labs,
AT WHAT CONDITIONS WILL YOU ANALYSE A SAMPLE,WHICH ARE PRESERVED AT OTHER THAN THE AMBIENT CONDITIONS?(ie COLD STORAGE SAMPLES BELOW 20* CENTIGRADE?
How will you select mobile phase in HPLC Method Development
How many clauses in ISO!
In BP2013, Loperamid HCl monograph. Assay by titration with 0.1N sodium hydroxide using hydrocloric acid 0.01N and reading the volume added between the 2 points of inflexion. I have a question that if the diluent solvent is ethanol is certainly consumed a amount of volume of titrant, so this volume must be eliminated on the result calculation or not apart from first point which is subtracted above.
what is the moisture content of Disodium hydrogen tartrate. how it can be calculted. as 16.5%
what is the definition of Precision.
Which detector is used in uv-vis spectrophotometer?
What is column in chromatography?
what is the origin to prepare standard operating procedure