Calcium carbonate decomposes when heated at about ____ .

Open in App

Solution

Calcium carbonate undergoes decomposition at 100° C to form Calcium oxide and Carbon dioxide.
It is a decomposition reaction as shown below.
${CaCO}_{3} \overset{100 ° C}{\to} CaO + {CO}_{2} (Calcium carbonate) (Calcium oxide) (Carbon dioxide)$
The temperature is indicated by writing the value of temperature on the arrow.
Therefore, calcium carbonate decomposes when heated at about 100° C .

Suggest Corrections

Similar questions

From the following list of substances. choose one substance in each case which matches the description given below :

Ammonium nitrate, calcium hydrogen carbonate, copper carbonate, lead nitrate, potassium nitrate, sodium carbonate, sodium hydrogen carbonate. zinc carbonate.

(a) A nitrate which gives off only oxygen when heated.

(b) A nitrate which on heating decomposes into dinitrogen oxide [nitrous oxide] and steam.

Q. When calcium carbonate is heated, it decomposes to give ______________.

Q. Calcium carbonate decomposes into calcium oxide and carbon dioxide at a temperature of
a.100⁰ c
b.1000⁰c

Q. Calcium carbonate decomposes completely, on heating, into lime

(C a O)

and carbon dioxide

(C O_{2})

. 1 kg of calcium carbonate is completely decomposed by heat, when 560 g of lime are obtained. How much quantity of carbon dioxide in grams, moles and litres at NTP is produced in the process ?

50 g

of an impure calcium carbonate sample decomposes on heating to give carbon dioxide and

22.4 g

calcium oxide. The percentage purity of calcium carbonate in the sample is:

Join BYJU'S Learning Program