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Reactions of Acids

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Question 1
Metallic oxides of zinc, magnesium and copper were heated with the following metals.
$\begin{matrix} M e t a l & Z i n c & M a g n e s i u m & C o p p e r Z i n c o x i d e & - & - & - M a g n e s i u m o x i d e & - & - & - C o p p e r o x i d e & - & - & - \end{matrix}$
In which cases will you find displacement reactions taking place?

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Solution

$\begin{matrix} M e t a l & Z i n c & M a g n e s i u m & C o p p e r Z i n c o x i d e & N o r e a c t i o n & D i s p l a c e m e n t & N o r e a c t i o n M a g n e s i u m o x i d e & N o r e a c t i o n & N o r e a c t i o n & N o r e a c t i o n C o p p e r o x i d e & D i s p l a c e m e n t & D i s p l a c e m e n t & N o r e a c t i o n \end{matrix}$

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Q. Metallic oxides of zinc, magnesium and copper were heated with the following metals.

Metal	Zinc	Magnesium	Copper
Zinc oxide
Magnesium oxide
Copper oxide

In which cases will you find displacement reactions taking place?

Q. Question 1
Metallic oxides of zinc, magnesium and copper were heated with the following metals.

\begin{matrix} M e t a l & Z i n c & M a g n e s i u m & C o p p e r Z i n c o x i d e & - & - & - M a g n e s i u m o x i d e & - & - & - C o p p e r o x i d e & - & - & - \end{matrix}

In which cases will you find displacement reactions taking place?

Q. Question 11
Generally, metallic oxides are basic and non-metallic oxides are acidic in nature. The solution of which of the following oxides in water will change the colour of blue litmus to red?

(a) sulphur dioxide
(b) magnesium oxide
(c) iron oxide
(d) copper oxide

Q. Question 11
Generally, metallic oxides are basic and non-metallic oxides are acidic in nature. The solution of which of the following oxides in water will change the colour of blue litmus to red?

(a) sulphur dioxide
(b) magnesium oxide
(c) iron oxide
(d) copper oxide

Q. Write balanced equations for the reactions of aqueous hydrochloric acid on: [3 MARKS]
(a) magnesium foil
(b) zinc carbonate
(c) copper oxide.

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