Write balanced equations for the following reactions: copper oxide and dilute hydrochloric acid.
Manganese (IV) oxide and concentrated hydrochloric acid.

(a) Name the experiment illustrated above.
(b) Which property of hydrogen chloride is demonstrated by this experiment?
(c) State the colour of the water that has entered the round-bottomed flask.

Open in App

Solution

The reactions of both copper oxide and manganese dioxide with hydrochloric acid are given below:

CuO(s) + 2HCl(aq) → CuCl₂(aq) + H₂O(l)
Copper Copper
oxide chloride

MnO₂ (s) + 4HCl(aq) → MnCl₂(aq) + 2H₂O(l) + Cl₂(g)
Manganese Manganese
dioxide chloride
(black)

(a) The experiment shown in the diagram above is known as the fountain experiment.
(b) The fountain experiment shows that hydrogen chloride is highly soluble in water.
(c) The colour of water that enters the round bottomed flask will be red in colour.

Suggest Corrections

Similar questions

(a) (i) Name the experiment illustrated below. (ii) State the colour of the water that has entered the round-bottomed flask.
(b) What property of hydrogen chloride is demonstrated when it is collected by downward delivery (upward displacement) ?

Write balanced equations for the following reactions:

Copper oxide and dilute hydrochloric acid

Manganese (IV) oxide, lead (IV) oxide and red lead (Pb₃O₄) react with concentrated hydrochloric acid to liberate chlorine.
(a) Name the common property exhibited by these metal oxides.
(b) Write the equation for the reaction of concentrated hydrochloric acid with Pb₃O₄.

In an experiment, sodium hydroxide solution reacts with a hydrochloric acid solution to produce sodium chloride solution and water.

Write the balanced equation (with physical states) for this experiment.

Q. (a) Define indicator. Name two indicators obtained from plants.
(b) Write balanced chemical equation for the reaction that takes place when sodium oxide reacts with water. How will this solution behave towards phenolphthalein and red litmus paper ?
(c) State what happen when sodium hydroxide solution reacts with dilute hydrochloric acid. What is this reaction called ?

Join BYJU'S Learning Program