(2) A has a high melting point, and B has a low melting point.
(3) A dissolves in water, and B does not dissolve in water.
(4) A does not burn in air, and B does burn in air.
The correct option is 4.
The ability of a compound to burn in air is a chemical property and can be used to distinguish between two compounds.
The statement that describes a chemical property which can be used to distinguish between compound A and compound B is: (4) A does not burn in air, and B does burn in air. Physical properties like color, melting point, and solubility (options 1, 2, and 3) are characteristics that can be observed without changing the substance into another substance. On the other hand, a chemical property describes how a substance interacts with other substances, including its flammability. Therefore, the ability or inability of a compound to burn in air would be a chemical property.
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CuSO4 + 2NaOH mc009-2.jpg Cu(OH)2 + Na2SO4
2NaOH + H2CO3 mc009-3.jpg Na2CO3 + 2NaOH
Pb(NO3)2 + Na2SO4 mc009-4.jpg 2NaNO3 + PbSO4
Answer:
The correct option is: Fe₂O₃ + 3CO → 2Fe + 3CO₂
Explanation:
An oxidation-reduction reaction, also known as the redox reaction, is a chemical reaction in which there is simultaneous transfer of electrons from one species to another.
The species that gains electrons gets reduced. Whereas, species that loses electrons gets oxidized.
Among the given options, only reaction 1 is a redox reaction:
Fe₂O₃ + 3CO → 2Fe + 3CO₂
Reason- In this reaction, iron (Fe) gains electrons and gets reduced from +3 oxidation state in Fe₂O₃ to 0 oxidation state in Fe. Whereas, carbon (C) loses electrons and gets oxidized from +2 oxidation state in CO to +4 oxidation state in CO₂.
Since both the oxidation and reduction reactions are occurring simultaneously.
Therefore, it is an redox reaction.
Answer : The correct option is,
Explanation : Given,
The value of pH of HCl = 6
As we know that,
pH : It is defined as the negative logarithm of hydrogen ion or hydronium ion concentration.
The formula of pH is :
Now put all the given values in this formula, we get the concentration of hydrogen ion.
Therefore, the concentration of hydrogen ion is,
B. Hydrogen bonds inside each water molecule
C. Ionic bonds between water molecules
D. Nonpolar covalent bonds between water molecules
Answer:
Both polar covalent bonds inside each water molecule and hydrogen bonds inside each water molecule are liable for attraction between water molecules.
Explanation: