[trishhead]

i need help i am writing up a bunch of reports and i am stuck doing a few pieces.
1)titrtion of sodim thiosufate with iodine solution(potasium iodide, h2so4 and sodium peroxoborate) i just need the equation.

2)tests for k N02 -, addition of hcl and warmed, a brown gas is produced, (no2 )
...-addition of kmno4+ h2so4 purlple colour dissapears,
equations and type of reaction.

3)uses of kno2 in lab and industry.

would be very grateful if anybody could reply to any part, thanks! :Confuzzled:

[Albert]

1)titrtion of sodim thiosufate with iodine solution(potasium iodide, h2so4 and sodium peroxoborate) i just need the equation.

I₂+ 2 S₂O₃^-- -> 2I^- + S₄O₆^--

tests for k N02 -, addition of hcl and warmed, a brown gas is produced, (no2 )
...-addition of kmno4+ h2so4 purlple colour dissapears

2HNO₂+2H⁺+2Cl^- -> 2NO+Cl₂+2H₂O

2NO + O₂ -> 2NO₂


2MnO₄^-+H⁺+5HNO₂ -> 2Mn²⁺+5NO₃^-+3H₂O

[trishhead]

thanks for answering my last question,,,
i just have one small last one, i am doing the chemisrty of NACL and KNO2 and all i am missing are uses for these compounds in the lab, i have uses in industry but not in the lab,
thanks! :1eye: