EP药典中0.01M盐酸溶液怎么配制

Question

EP 药典中0.01M盐酸溶液怎么配制

Answer 1

1mol/l盐酸(滴定液)
1 M Hydrochloric acid. 3001800.
Dilute 103.0 g of hydrochloric acid R to 1000.0 mL with
water R.
Standardisation. Dissolve 1.000 g of sodium carbonate RV in
50 mL of water R, add 0.1 mL of methyl orange solution R
and titrate with the hydrochloric acid until the solution just
becomes yellowish-red. Boil for 2 min. The solution reverts to
yellow. Cool and continue the titration until a yellowish-red
colour is obtained.
1 mL of 1 M hydrochloric acid is equivalent to 53.00 mg of
Na2CO3.
0.1mol/l盐酸
0.1 M Hydrochloric acid. 3002100.
Dilute 100.0 mL of 1 M hydrochloric acid to 1000.0 mL with
water R.
Standardisation. Carry out the titration described for 1 M
hydrochloric acid using 0.100 g of sodium carbonate RV
dissolved in 20 mL of water R.
1 mL of 0.1 M hydrochloric acid is equivalent to 5.30 mg of
Na2CO3.
1M盐酸是103.0g的盐酸用水稀释至与1000ml,0.1M就是把1M的稀释10倍.EP并没有标明0.01M如何配制,但可以推断用1M盐酸稀释100倍即可.
即：103.0g盐酸溶液,用水溶解到1000ml.取该溶液稀释100倍即得.
上述引用位于EP8.0第547页,滴定液项下.