Answer:
Starch.
Explanation:
When the triiodide combine with starch, it forms dark blue colour. Amylose in starch is responsible for the occurrence of a deep blue color when the iodine is combine with the starch. The iodine molecule goes inside of the amylose coil which makes a linear triiodide ion complex that goes into the coil of the starch that leads to an intense blue-black color in the end so we can say that starch turns the colour into blue.
Answer:
CN⁻
Explanation:
Oxyanion:
Oxyanion is the anion that have oxygen atom.
General formula:
The general formula for oxyanion is AₓOₓ⁻².
A = symbol of element combining with oxygen.
O = oxygen atom
z,x, = integers
a) = NO⁻
Its is an oxyanion because oxygen atom is present with nitrogen.
b) = SO₄⁻
It is an oxyanion because oxygen atom is present.
c) = CN⁻
This is not an oxyanion because there is no oxygen atom present.
d= CO₃²⁻
It is also an oxyanion because of presence of oxygen atom.
Answer:
A)Chlorine and Bromine:
They are both non metal hence they form a covalent bond due to covalent bonding.
B)Potassium and Helium:
Helium ion has a small cationic radius and distorted by the potassium ion due to polarization.
C)Sodium and Lithium:
Both are metals hence they form a metallic bond since they share electrons to the electron cloud.
618.454. I just did the equation in a character oops.
The balanced equation is:
BaCl2 (aq) + Na2SO4 (aq) ----> BaSO4(s)+ 2 NaCl(aq)
This is a double replacement reaction.
The reactants are:
a) BaCl2: barium chloride, a ionic compound, therefore soluble in water,
b) Na2SO4: sodium sulfate, another ionic compound, therefore also soluble in water.
The products are:
c) BaSO4: barium sulfate, a solid not soluble in water which precipitates.
d) NaCl: sodium chloride, an ionic compound, therefore soluble in water.
