Q. How do you write the formula for potassium dichromate?
K2Cr2O7
Q. How do you write K2Cr2O7?
Potassium dichromate, K2Cr2O7, is a common inorganic chemical reagent, most commonly used as an oxidizing agent in various laboratory and industrial applications.
Q. Is K2CrO4 a base?
Potassium chromate is the chromate anion’s yellow base of potassium chloride.
Q. How do you deal with potassium chromate?
Absorb liquids in dry sand, earth, or a noncombustible material and place into sealed containers for disposal. DO NOT wash into sewer. Potassium Chromate is very toxic to aquatic organisms and may cause long-term effects in the aquatic environment.
Q. What color is Cr2O7?
orange
Q. What is the name for CrO4 2?
Chromate | CrO4-2 – PubChem.
Q. Where is phosphine used?
DESCRIPTION: Phosphine is used in the semiconductor industry to introduce phosphorus into silicon crystals . It is also used as a fumigant, a polymerization initiator and as an intermediate for the preparation of several flame retardants. Phosphine has an odor of garlic or decaying fish but is odorless when pure.
Q. Is phosphine acidic or basic?
Phosphine is basic due to the presence of lone pair on phosphorus.
Q. What is the name for CF4?
Carbon tetrafluoride
Q. How do you neutralize phosphine gas?
In this reaction, phosphine gas is trapped and neutralised by boric acid. The resulting polar reaction product seems to be excretable by the body due to hydrogen bonding with water molecules. Thus, boric acid is proposed as a possible efficient non-toxic antidote for phosphine gas poisoning.
Q. What are the symptoms of phosphine gas?
Acute (short-term) inhalation exposure to phosphine may cause headaches, dizziness, fatigue, drowsiness, burning substernal pain, nausea, vomiting, cough, labored breathing, chest tightness, pulmonary irritation, pulmonary edema, and tremors in humans.
Q. How long does phosphine gas last?
Phosphine in the atmosphere is rapidly degraded (World Health Organization, 1988). The half-life in air is approximately five hours with the mechanism of degradation being photoreaction with hydroxy radicals. The dark half-life is approximately 28 hours.
Q. Can phosphine gas kill you?
“When this chemical comes in contact with water, it creates phosphine gas, which is highly poisonous and can cause pulmonary edema and respiratory failure.”
Q. How do you make phosphine gas?
Phosphine (PH3), also called hydrogen phosphide, a colourless, flammable, extremely toxic gas with a disagreeable garliclike odour. Phosphine is formed by the action of a strong base or hot water on white phosphorus or by the reaction of water with calcium phosphide (Ca3P2).
