Advertisements
Advertisements
Question
Give balanced equation for the following conversion affected by heat alone on the substance:
Zinc carbonate to zinc oxide
Advertisements
Solution
Action of heat on:
\[\ce{\underset{\text{White}}{ZnCO3}->[\triangle] \underset{\text{[Zinc oxide] yellow - hot white - cold}}{ZnO} + CO2}\]
APPEARS IN
RELATED QUESTIONS
Explain the following reaction with one suitable example of Decomposition reaction
State the type of reactions for the following represent and balance the ones that are not balanced.
NaOH + HCl → NaCl + H2O
Write your observation and a balanced equation in the case of the following substances being heated.
Copper carbonate.
Match the chemical reactions in List I with the appropriate answer in List II.
| List I | List II | ||
| 1. | \[\ce{XY⇌[heat]X + Y}\] | A: | Displacement reaction |
| 2. | \[\ce{XY->X + Y}\] | B: | Double decomposition |
| 3. | \[\ce{X+Y- + A+B^-->X+B- + A+Y-}\] | C: | Endothermic reaction |
| 4. | \[\ce{X + YZ->XZ + Y}\] | D: | Thermal dissociation |
| 5. | \[\ce{X + Y->[heat]XY -\Delta}\] | E: | Decomposition reaction |
________ is a chemical substance which alters the speed of a chemical reaction.
A bag of cement lying in the open gets wet due to rain during the night. The next day the sun shines brightly. Do you think the changes, which have occurred in the cement, could be reversed?
Anaerobic bacteria digest animal waste and produce biogas (Change – A). The biogas is then burnt as fuel (Change – B). The following statements pertain to these changes. Choose the correct one.
Water boiling into water vapour is an example of chemical change.
A student took a solution of copper sulphate in a beaker and put a clean iron nail into it and left it for about an hour.
What changes do you expect?
Galvanization is a process in which ______ is coated as a layer of iron.
