Macro Analysis Would Like To Drop Half A Drop Of Solution

摘要

By strong alkali (acid) titration strong acid (alkali), alkali (acid) titration mono-weak acid (alkali), precipitation titration and coordination titration to drop by half a drop, and settling the titration error specific terms, to illustrate the macro titration analysis would like to have drop half a drop of a solution. When strong alkali titrate strong acid or monobasic weak acid, there is no need to drop half a drop. As strong acid titrate strong alkali, there is must to drop half a drop as methyl orange for indicator. But phenolphthalein as indicator, there is doesn't need to drop half a drop. Strong alkali titrate monobasic weak acid, there is no need to drop half a drop. Eriochrome Black T for indicator titrate magnesium ion with EDTA, there is must to drop half a drop. Titration of zinc by EDTA, don't need to drop half a drop. Titration chloride ion with Moore method can not drop half a drop."Is stringing out towards the end, and set the pace to slow down, or half a drop of a drip, drip, drip, to wash the bottle into a cone pure water wash the bottle with the solution came with all;;then a drop of a drip, drip until the color is changed, t Quickly close the faucet and stopped the titration. Is end point of titration. Drop by half a drop in the law is a little turn, drops hung to the solution, and heaving burette mouth, Would be tapered contact with the nozzle. Drop out of the fluid, and used to wash bottles in pure water down the titrant." This is described by many Analytical Chemistry Experiment book. It to the students the impression that all the titration analysis operation requires dropping half a drop drip with a solution. Is it? I'm on the issue under discussion.