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实验预习、记录和实验报告 和产率计算 PowerPoint PPT Presentation


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实验预习、记录和实验报告 和产率计算. 实验预习是有机化学实验的重要环节,对保证实验成功与否、收获大小起着关键的作用。为了避免照方抓药,而积极主动、准确地完成实验,必须认真做好实验预习。教师有义务拒绝那些未进行预习的学生进行实验。预习的具体要求如下:. 实验预习. ( 1 )将本实验的目的、要求、反应式、主要反应物、试剂和产物的物理常数、用量和规格摘录于记录本中。 ( 2 )写出实验简单步骤。每个学生应根据实验内容上的文字改写成简单明了的实验步骤。仪器以示性图代之。在实验前已形成了一个工作提纲,使实验有条不紊地进行。

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实验预习、记录和实验报告 和产率计算

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5200954


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  • /100%


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  • 5g 3g

    1mol 1mol 5g 5/100=0.05mol 0.05mol 82g 0.05=4.1g 3g

    3 / 4.1 * 100% = 73%


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