Thi nghiem hoa hoc That don gian

Tags: 1M HCl, Mike Karabinos, co so vat chat, Thi nghiem ao, viec thao tac, su than trong, phong thi nghiem, thuc hanh, cua so, don gian, hoa hoc, dung tich, binh chua, ML, bam


Thi nghiem hoa hoc That don gian

Nhung bai tap thuc hanh luon dem lai hung thu cho hoc sinh, no gop phan cung co nhung ly thuyet da duoc cac thay co giang day. Tuy nhien, co so vat chat cua nhieu truong hoc chua dap ung duoc nhu cau. Ben canh do viec thao tac voi cac hoa chat luon doi hoi su than trong. Vi vay, hay thuc hanh hoa hoc voi VLAB-phong thi nghiem ao cua tac gia Mike Karabinos.

Dung luong chi 1MB tai ve tu dia chi www.chemcollective.org/download/vlab.zip , nhung phai tai them Java J2SE JRE tai dia chi http://java.sun.com/j2se/1.4.2/download.html thi phong thi nghiem hoa hoc ao moi hoat dong duoc. Ca hai phan mem noi tren deu mien phi.

Sau khi tai Java J2SE JRE, hay cai dat no vao may tinh. Ke tiep la giai nen vlab.zip vao mot thu muc xac dinh. Bam chuot kich hoat file vlab.exe de chuong trinh lam viec.

Cac cong cu cua phong thi nghiem ao gom:

- Glassware (cac thiet bi bang thuy tinh) trong do
- Beaker: Coc thuy tinh dung tich 250 va 600 ml
- Erlenmeyer Flask: Binh non dung tich 250&500 ml
- Graduated Cylinder: Ong dong 10, 25, 50 ml
- Pipet: thiet bi nho giot 5, 10, 25 ml va pipet co nut cao su o dau
- Volumetric Flask: Binh co dung tich chuan 100, 250, 500, 1.000 ml
- Buret 50 ml
- Foam Cup: Coc chuyen dung
- Instrument: nhom cong cu ho tro gom den Bunsen, Weighing Boat (dia can), Scale (can dien tu, can ca hoat chat lan bao bi)

Cua so lam viec cua chuong trinh duoc chia lam ba phan:

- Ben trai la cac hoa chat (co the da chuan do)
- O giua la noi goi ra cac thiet bi va thao tac thuc hanh
- Ben phai la cac thong tin ve tinh chat cua dung dich, hoat chat nhu trong luong, nhiet do, do pH...

Thuc hanh voi Vlab:

- Bam menu FileLoad Homework de goi hop Load Homework noi chua cac chu de, quy dinh cua viec thuc hanh ao. Chon mot trong so cac chu de do roi bam OK. Hay thuc hanh don gian voi Acid-Baz qua phan ung trung hoa nhu sau: Tai hop Load Homework chon Acids and BasesStrong Acid Problems. OK

- Cua so ben trai bam chon Strong-bases, bam chuot keo bieu tuong 1M NaOH sang cua so thuc hanh o giua. Tiep tuc bam chon Indicator (chat chi thi mau) keo bieu tuong Phenolphthalein qua cua so thuc hanh. Ke tiep chon Strong-acids keo hai bieu tuong 1M HCl va 0,1M HCl qua cua so thuc hanh. Bam chuot vao tung binh chua dung dich, de dang nhan thay dung tich mac nhien la 100 ml; Nhiet do la 250C; pH cua binh chua NaOH 1M la 14; pH cua binh chua Phenolphthalein la 7; pH cua binh HCl 1M la 0 va pH cua binh chua HCl 0,1M la 1 (nhung thong tin noi tren hay quan sat o cua so ben phai).

- Keo lo chua Phenolphthalein vao binh chua 1M NaOH tha chuot ra ban se thay bieu tuong chua Phenolphthalein nghieng vao binh NaOH nhu san sang de rot vao. Duoi cung cua cua so chuong trinh la o Transfer amount (ml) co dau tro chuot dang nhap nhay, go vao do 1 (ml) roi bam Pour. Dung dich NaOH tro nen mau do. Keo binh 1M HCl vao binh NaOH, go o Transfer 100 (ml). Binh NaOH se chuyen thanh mau trang nhu luc ban dau, dung tich bay gio la 201 ml va pH=7.

Tren day chi la mot vi du don gian, co rat nhieu thi nghiem gia lap doi voi Vlab, cac ban hay nghien cuu va su dung phong thi nghiem hoa hoc gia lap nay.

Ta Xuan Quan

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Tìm hiểu: 1M HCl, Mike Karabinos, co so vat chat, Thi nghiem ao, viec thao tac, su than trong, phong thi nghiem, thuc hanh, cua so, don gian, hoa hoc, dung tich, binh chua, ML, bam

Xem Bản Tiếng Việt Có Dấu: Thí nghiệm hóa học: Thật đơn giản !

Ban co the doc ban tieng Viet co dau cua bai viet Thí nghiệm hóa học: Thật đơn giản ! bang cach nhan chuot vao duong dan tren.

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