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溶液配制与滴定操作实验报?- 百度文库

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ֺCO2ԣNaOH׼ҺŨֻͨ궨áˣ׼ҺƳֱӷ׼Һƣ⣬ñ궨

֪׼ȷŨȵҺɳΪ׼Һ׼ҺŨı׼ҺϡͶɣ£

ҺܻҺǹȡһŨ׼ҺתƿУߣ

ζŨȵıȽ ʵ鱨

ʵĿľͲд˴ҿ϶

һ ʵԭ

1.ָʾɫΧpH׻ȵıɫΧ3.1-4.40-3.1Ϊɫ

3.1-4.4Ϊɫ4.4-14Ϊɫ̪ıɫΧ8.2-10.00-8.2Ϊɫ8.2-10.0Ϊdzɫ10.0-14Ϊɫ

2.ƵķӦʽΪHCl+NaOH=NaCl+H2O

кͷӦУҺpHᷢͻ䣬ͨҺɫ仯жϵζյ㣬֮ⶨĵ߼Ϳùʽ

VB*cB*A=VA*cA*B

Ũ֮ȣʹѧƵķӦƵĻѧΪ1

3.ζǽζ֪׼ȷŨȵı׼ҺμӵбֵҺУֱﵽζյ㣬ȻݵζŨȺĵ㱻ֺһַ

4,׼Һ÷һֱ֣ƷͼƷʵüƷԷ̪׻Ϊָʾȷζյ

ʵ鲽

1. ʵԼ

ŨΪcNaOH=1mol/LNaOHҺҪ󲻺̼ӣ

ŨΪcHCl=1mol/LHClҺ

0.1%ָ̪ʾ

0.1%׻ָʾ

2. ʵ׼

1 ʽʽζܸһ֧ϴڱڲˮ顣ȻͿͣ©

5-10mlȥˮϴα

2 ׶ƿƿϸԼƿˮϴˮ飬

ȥˮϴΣáƿϴ󵹿ڸɾıֽϣȻԱ´ʵ

3. ҺŨȵıȽ

1 Ͳֱȡ40mlŨΪcNaOH=1mol/LNaOHҺŨΪ

cHCl=1mol/LHClҺֱԼƿУͲֱȡ

360mlȥˮֱԼƿУԼƿеҺҡ

ȣŨΪcNaOH=0.1mol/LNaOHҺŨΪcHCl=0.1mol/LHClҺ

ʵ¼ݴ

1. ü׻Ϊָʾ

25.0025.0025.00

0.00 0.000.00

25.0025.0025.00

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ֺCO2ԣNaOH׼ҺŨֻͨ궨áˣ׼ҺƳֱӷ׼Һƣ⣬ñ궨 ֪׼ȷŨȵҺɳΪ׼Һ׼ҺŨı׼ҺϡͶɣ£ ҺܻҺǹȡһŨ׼ҺתƿУߣ ζŨȵıȽ ʵ鱨 ʵĿľͲд˴ҿ϶ һ ʵԭ 1.ָʾɫΧpH׻ȵıɫΧ3.1-4.40-3.1Ϊɫ 3.1-4.4Ϊɫ4.4-14Ϊɫ̪ıɫΧ8.2-10.00-8.2Ϊɫ8.2-10.0Ϊ

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