H2SO4 also known as oil of vitriol is described as the king of chemicals because of its versatility and high reactivity. Owing to its versatility it is used extensively in industries and therefore its titre determination is a frequent process. European Pharmacopoeia describes the method for titer...
b) H2SO4 + CuSO4 c) CH3COONa + CH3COOH d) NaCl + NaOH Answer : c) CH3COONa + CH3COOH Q7. Which of the following is used as an indicator in the titration of a weak acid and a strong base? a) Methyl orange (3 to 4.6) b) Bromothymol blue (6 to 7.5) c) Phenolphthalein (8 to...
In a titration experiment, 12.5 mL of 0.500 M H2SO4 neutralize 50.0 mL of NaOH. What is the concentration of the NaOH solution? Consider the titration of 100.0 mL of the weak diprotic acid H2A (0.10 M) with 0.20 M NaOH. What are the major species at each of the following points in...
H2SO4 + CuSO4 CH3COONa + CH3COOH NaCl + NaOH Answer : c) CH3COONa + CH3 COOH Q7. In the titration of a weak acid and a strong base, which of the following is utilised as an indicator? Methyl orange (3 to 4.6) Bromothymol blue (6 to 7.5) ...
words,MBVB=(mol/L)(L)=molNaOHinstandard Fromtheequation,youknowthatthemoleratioofNaOHtoH2SO4is2:1.TwomolesofNaOHarerequiredtoneutralize1molofH2SO4.molH2SO4titrated=molNaOHinstandardx(1molH2SO4/2molNaOH)MArepresentsthemolarityoftheacidandVArepresentsthevolumeoftheacidinliters.MA=molH2SO4...
Take up the residue with H2SO4 and MeOH and distill as MeBO3 into water made alkaline with Na2CO3. Add one drop rosolic acid, evaporate to a small volume, make acid with HCl and expell the CO2 by heating. Adjust the pH to approximately 7.5 with N/10 HC1 or NaOH. Add sufficient ...
例如用naoh标准滴定溶液可直接滴定hcl、h2so4等试样 (2) 返滴定法:返滴定法(又称回滴法)是在待测试液中准确加入适当过量的标准溶液,待反应完全后,再用另一种标准溶液返滴剩余的第一种标准溶液,从而测定待测组分的含量。 这种滴定方式主要用于滴定反应速度较慢或反应物是固体,加入符合计量关系的标准滴定溶液后,...
NaOH, HCl each has only a single reactive hydrogen ion or hydroxide ion eq wt = MW - H 2 SO 4 : strong acid ให้ 2 H + ; H 2 SO 4 : 0.5 M = 1 N eq wt = one – half its MW 1 M = 2 N = MW / 2 MW / L = 2 (MW/2 / L) 4 USP : Volumetric Solution ...
sodium hydroxide dissolves in water to form an aqueous solution of ions. (2) Solid sodium hydroxide reacts with aqueous hydrochloric acid to form water and an aqueous solution of sodium chloride. NaOH(s) + H+(aq) ) + Cl–(aq) → H2O(l) + Na+(aq) + Cl–(aq) ∆H2 = ?
and methylreddon’t matchtheexact equivalencepoint, buttheslopeisso steepthatitdoesn’t matter.*Strong-,,,theacidisneutralizedandthesolution’+ionsfromtheacidhavebeenusedup,,theadditionofmoreNaOHagainresultsinthegradualincreaseinpH.*.*TitrationCalculations:,ordingtothisequation:H2SO4(aq)+2NaOH(aq)?