MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Zinc Ion

Account for t...

Question

Account for the following and give reason - Calcium chloride forms a white coloured suspension on adding water .

Open in App

Solution

When you add calcium chloride to water, the solution heats. When adding calcium chloride to water, hydrochloric acid and calcium oxide form
cacl2 +H2o ---> Cao + HCl
that is why it forms white coloured suspension

Suggest Corrections

thumbs-up

0

Similar questions

Give reasons to show that the following are chemical changes :

Adding of calcium to water:

Q. A mixture of two white substances is soluble in water. This solution gives brown colour gas on passing chlorine gas. Another sample of solution gives white precipitate with

B a C l_{2}

which is insoluble in concentrated

H C l

. The original solution of the mixture gives white precipitate with large excess of

N a O H

solution whose suspension is used as antacid. After filtering the precipitate, the filtrate was boiled with excess

N a O H

solution which gave a yellowish precipitate on adding

N a C l O_{4}

. One of the compound of the mixture forms alum. Identify the mixture.

Q. (a) State the colour of the residue formed when nitrates of
1. Calcium 2. Zinc 3. Lead 4. Copper are strongly heated.

(b) Give one test each to distinguish between the following pairs of chemicals.
1. Zinc nitrate solution and calcium nitrate solution.
2. Sodium nitrate solution and sodium chloride solution.
3. Iron (III) chloride solution and copper chloride solution.

Suggest a suitable technique to separate the constituents of the following mixtures. Also give the reason for selecting the particular method.

(a) Salt from sea water

(b)Ammonium chloride from sand

(c)Chalk powder from water

(d)Iron from sulphur

(e)Water and alcohol

(f)Sodium chloride and potassium nitrate

(g)Calcium carbonate and sodium chloride.

Q. A mixture of two white substances was dissolved in water. On passing

C l_{2}

gas through the solution, a deep brown colour is developed. Addition of

B a C l_{2}

solution to the original solution gives a white precipitate. Addition of a large amount of

N a O H

solution to the original solution gives a white precipitate, whose suspension in water is used as an antacid. The mixture gives golden yellow colour flame. The mixture contains :

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Zinc ion

CHEMISTRY

Watch in App

explore_more_icon

Explore more

Standard X Chemistry

Join BYJU'S Learning Program

CrossIcon