一氧化氮的制备及其化学性质研究 Preparation of Nitrogen Monoxide and Study of Its Chemical Properties

List of Experiment Today Preparation of Nitrogen Monoxide and Study of Its Chemical Properties(microscale experiment) Making of silver Nanoparticles Quantitative Analysis of a Mixture of Carbonates(inquiry-Based approach)

List of Experiment Today •Preparation of Nitrogen Monoxide and Study of Its Chemical Properties (microscale experiment) •Making of Silver Nanoparticles •Quantitative Analysis of a Mixture of Carbonates(Inquiry-Based Approach)

Preparation of Nitrogen Monoxide and Study of Its Chemical Properties (microscale experiment) CURRICULUM LINK ToPCⅦ REDOX REACTIONS. CHEMICAL CELLS AND ELECTROLYSIS

Preparation of Nitrogen Monoxide and Study of Its Chemical Properties (microscale experiment) CURRICULUM LINK TOPIC VII REDOX REACTIONS, CHEMICAL CELLS AND ELECTROLYSIS

Background Nitrogen monoxide(No) is a colourless gas. It can be prepared by the reaction of sodium nitrite with acidified iron() sulphate solution 2NaNO2(s)+ 2FeSo4(aq)+3H2SO4(aq)- 2NO(g)+ Fe2(S04)3(aq)+2NaHSO4(aq)+2H,() Nitrogen monoxide is very reactive and is readily oxidised in air to produce nitrogen dioxide 2NO(g)+02(g) 2NO249)

Background Nitrogen monoxide (NO) is a colourless gas. It can be prepared by the reaction of sodium nitrite with acidified iron(II) sulphate solution: Nitrogen monoxide is very reactive and is readily oxidised in air to produce nitrogen dioxide:

Background 2NaNO2(s)+ 2FeS04(aq)+3H2S04(aq)- 2NO(g)+Fe2(So4)3(aq)+ 2NaHSO4(aq)+ 2H,0() Nitrogen monoxide has a very limited solubility in water. The oxidation state of nitrogen in nitrogen monoxide(no)is +2. Since typical oxidation state of nitrogen ranges from-3 to +5, nitrogen monoxide has both oxidising and reducing properties with suitable reagents

Background Nitrogen monoxide has a very limited solubility in water. The oxidation state of nitrogen in nitrogen monoxide (NO) is +2. Since typical oxidation state of nitrogen ranges from -3 to +5, nitrogen monoxide has both oxidising and reducing properties with suitable reagents

Tasks To prepare nitrogen monoxide from sodium nitrite and acidified iron() sulphate solution To study the oxidising and reducing properties of nitrogen monoxide with 1 acidified potassium permanganate solution, )bromine water (3 )acidified iron()sulphate solution, and (4)air ( oxygen)

Tasks • To prepare nitrogen monoxide from sodium nitrite and acidified iron(II) sulphate solution. • To study the oxidising and reducing properties of nitrogen monoxide with (1) acidified potassium permanganate solution, (2) bromine water, (3) acidified iron(II) sulphate solution, and (4) air (oxygen)

Chemicals NaNO, s) FeSO4/H*(aq) 1 M Naoh(aq) d Irot KMnO /Ht(aq) Br,aql Deionised water mine wate

Chemicals • NaNO2 (s) • FeSO4 /H+ (aq) • 1 M NaOH(aq) • KMnO4 /H+ (aq) • Br2 (aq) • Deionised water

Part A: Preparation of Nitrogen Monoxide 1. Add 250 cm of deionised water into a 250 cm beaker. 100—個5 2. Pour about 100 cm of 1 m naoh solution into another 250 cm 1 MNaOH beaker soluti wate

Part A: Preparation of Nitrogen Monoxide 1. Add 250 cm3 of deionised water into a 250 cm3 beaker. 2. Pour about 100 cm3 of 1 M NaOH solution into another 250 cm3 beaker. deionised water 1 M NaOH solution

Part A: Preparation of Nitrogen Monoxide 3. Carry out the following for a 100 cm3 class syring (a) Insert the plunger into the syringe, and push and pull the plunger several times. Check whether the plunger moves smoothly in the syringe

Part A: Preparation of Nitrogen Monoxide 3. Carry out the following for a 100 cm3 glass syringe: (a) Insert the plunger into the syringe, and push and pull the plunger several times. Check whether the plunger moves smoothly in the syringe

Part A: Preparation of Nitrogen Monoxide 3.(b)Cap the syringe with the syringe cap or your finger and check whether the plunger moves smoothly in the syringe If it does, there may be a leakage and then you should ask for help

Part A: Preparation of Nitrogen Monoxide 3. (b) Cap the syringe with the syringe cap or your finger and check whether the plunger moves smoothly in the syringe. If it does, there may be a leakage and then you should ask for help

Part A: Preparation of Nitrogen Monoxide 4.(a) Weigh about 0.25 g of NaNO(s)with an electronic balance and transfer it into a vial cap. Make sure that the nanO 2 solid is evenly placed in the cap

Part A: Preparation of Nitrogen Monoxide 4. (a) Weigh about 0.25 g of NaNO2 (s) with an electronic balance and transfer it into a vial cap. Make sure that the NaNO2 solid is evenly placed in the cap