In synthetic luminol process we need luminol’s precursor. That is
5- nitrophthalhydrazide. It is synthesized by the reaction of 3-nitrophthalic acid
with hydrazine. This process is condensation reaction. First, hydrazine(N2H4) is
heated with the 3-nitrophthalic acid. This reaction is most conveniently carried
out in the high-boiling solvent triethylene glycol. To boil off excess water, t
산-염기 중화 반응
중화반응이란(neutralization reaction) 산과 염기가 만나 일으키는 산-염기 반응으로 수용액에서의 산-염기 반응에서 산이 내어 놓은 수소 이온과 염기가 내어 놓은 수산화 이온이 만나서 물이 생기는 반응을 말한다.
H?(aq) + OH?(aq) → H₂O(l)
표준 용액(standard solution) 은 부피 적정을 위해
Writing Net Ionic Equations
Write the balanced molecular equation.
Write the ionic equation showing the strong electrolytes completely dissociated into cations and anions.
Cancel the spectator ions on both sides of the ionic equation
Check that charges and number of atoms are balanced in the net ionic equation
Write the net ionic equation for the reaction of silver nitrate with sodium ch
The luminol is activated with an oxidant. Hydrogen peroxide solution and sodium hydroxide is
used as the activator. In the presence of an catalyst, the hydrogen peroxide is decomposed to form
oxygen and water. The iron in potassium ferricyanide is a catalyst for the reaction.
When luminol reacts with the sodium hydroxide, a dianion is formed. The oxygen produced from
the hydrogen peroxi
reaction in apples or potatoes, etc. Some preservation methods require foods to be sealed after treatment to prevent recontamination with microbes; others, such as drying, allow food to be stored without any special containment for long periods.
Common methods of applying these processes include drying, spray drying, freeze drying, freezing, vacuum-packing, canning, preserving in syrup, sugar c