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Chemical Reactions

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Question

write the formulae and names of the compounds formed by
calcium ion and oxalate ion
ammonium ion and acetate ion
magnesium ion and carbonate ion
lithium ion and bicarbonate ion

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Solution

1. Calcium oxalate : Ca(C₂O₄)
2. Ammonium acetate : NH₄(CH₃COO) or CH₃COONH₄
3. Magnesium carbonate : MgCO₃
4. Lithium bicarbonate : LiHCO₃

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Q. The formula of the calcium ion is

C a^{2 +}

and that of the acetate ion is

C H_{3} C O O^{-}

. What is the formula of calcium acetate?

Q. Carbonate and bicarbonate ions are:

Q. Baking soda mainly contains sodium bicarbonate. When this is treated with dilute hydrochloric acid, the following reaction occurs.

N a H C O_{3} + H C l \to N a C l + C O_{2} + H_{2} O

Answer the questions below.
i) What is the valency of the sodium ion?
ii) What is the valency of the bicarbonate ion?
iii) Is the chloride ion monovalent or divalent?
iv) What do the symbols

\to

↑

imply in the reaction?
v) If one more

H^{+}

ion is removed from bicarbonate ion gives carbonate ion. Write the formula of the carbonate radical.
vi) The bicarbonate ion is __________ anion.( Monoatomic / Polyatomic)
vii) Name the products formed in the above reaction.
viii) Identify the cation and the anion in the formula of Sodium chloride.
ix) What is the difference between sodium and sodium ion.
x) State the law which must be fulfilled, while balancing the chemical equation.

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