Chemistry
Choose the reaction which is not a precipitation reaction under prevalent conditions. 1. Pb(NO3)2 + NaOH 2. Pb(NO3)2 + Na2SO4 3. Pb(NO3)2 4. Pb(NO3)2 + NaCl
Related Questions
Explain the term energy changes in a chemical change. Give an example with a balanced equation, for each of the following reactions:
(a) exothermic reaction
(b) endothermic reaction
(c) photochemical reaction
(d) electrochemical reaction.
Choose the conversion reaction which is exothermic & takes place by supply of catalytic energy.
- Hydrogen to HCl
- Ammonia to nitric acid
- Nitrogen to nitric oxide
- Oxygen to ozone.
Give a balanced equation for a direct combination reaction involving :
(a) Two elements — one of which is a neutral gas and the other a yellow non-metal
(b) Two elements – one of which is a neutral gas and the other a monovalent metal
(c) Two compounds – resulting in formation of a weak acid