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一、测定原理植物以葡萄糖为基质进行有氧呼吸时,反应为: C_BH_12O_R+6O_2→6CO_2+6H_2O+674大卡呼吸强度可以从它吸收的O_2或放出的CO_2的速度来衡量。以NaOH吸收放出的CO_2,用BaCl_2沉淀Na_2CO_3(为碱性)以避免干扰滴定结果,然后用标准HCl滴定剩余的NaOH,再减去空白滴定量。即可
First, the determination of the principle of glucose-based plant aerobic respiration, the reaction is: C_BH_12O_R 6O_2 → 6CO_2 + 6H_2O + 674 Kcal respiration intensity can be absorbed from it O_2 or CO_2 rate of discharge to measure. The released CO 2 is absorbed with NaOH and Na 2 CO 3 is precipitated with BaCl 2 to avoid disturbing the titration result. The remaining NaOH is then titrated with standard HCl, minus the blank titration. Can be