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disa [49]
3 years ago
15

Explain in terms of ions and molecules. what happens when any acid reacts with any alkali

Chemistry
1 answer:
kodGreya [7K]3 years ago
6 0
It dissolves and desinagrates  sorry for my spelling
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Write an equation to show how hco3− can act as a base with hs− acting as an acid.
Ne4ueva [31]

Answer:  HCO_{3}^{-}+ HS^{-}\rightleftharpoons H_{2}CO_{3} + S^2{-}

Explanation:

According to Bronsted and Lowry an acid is a proton donor and base is a proton acceptor.

Therefore, the equation for the reaction will be as follows.

       HCO_{3}^{-}+ HS^{-}\rightleftharpoons H_{2}CO_{3} + S^2{-}

Here, HCO_{3}^{-} acts as a base as it is accepting a proton and HS^{-} acts as an acid because it is donating a proton.


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Neporo4naja [7]
Corrosion is the gradual destruction of materials by chemical reaction with the environment.It can be prevented by galvanisation.
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Given the following cations, list them in the expected order from smallest to largest: Y3+, Nb3+, Sb3+
Ugo [173]

<u>Answer:</u> Antimony ion is the smallest and yttrium ion is the largest.

<u>Explanation:</u>

Atomic radius of an atom is defined as the total distance from the nucleus to the outermost shell of the atom.

An ion is formed when a neutral atom looses or gains electrons.

  • When an atom looses electrons, it results in the formation of positive ion known as cation.
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As moving from left to right in a period, more and more electrons get added up in the same shell and the attraction between the last electron and nucleus increases, which results in the shrinkage of size of an atom. Hence, the size of an atom decreases.

The size of the cation is small then their neutral atom because it has less number of electrons while its nuclear charge remains the same. Thus, the nucleus attracts the electron more towards itself and leads to the decrease in size.

We are given three cations:  Y^{3+},Nb^{3+}\text{ and }Sb^{3+}

Yttrium lies in Period 5, group 3 of the periodic table.

Niobium lie in Period 5, group 5 of the periodic table.

Antimony lies in Period 5, group 15 of the periodic table.

So, the order of atomic radii in increasing order follows:

Sb^{3+}

Hence, antimony ion is the smallest and yttrium ion is the largest.

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Answer:

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Sodium bicarbonate undergoes thermal decomposition according to the reaction
geniusboy [140]

Answer: option A, J, K, N, O

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