V. K. Sally and R. Goel Solutions for Chapter: Chemical Reactions and Equations, Exercise 1: EXERCISE 1A

A chemical reaction is characterised by:

Heat energy absorbed during a chemical reaction is represented in a complete chemical equation towards the products by

Which one amongst the following is a complete balanced equation?

Regarding balanced chemical equation which one of the following is incorrect?

Which one of the following processes involve chemical reactions?

Balance the following equation:
$\mathrm{Cu}{\left({\mathrm{NO}}_3\right)}_2\left(\mathrm{s}\right)\to \mathrm{CuO}\left(\mathrm{s}\right)+{\mathrm{NO}}_2\left(\mathrm{g}\right)+{\mathrm{O}}_2\left(\mathrm{g}\right)$

Balance the following equation:
$\mathrm{Al}{\left(\mathrm{OH}\right)}_3\left(\mathrm{s}\right)+{\mathrm{H}}_2{\mathrm{SO}}_4\left(\mathrm{aq}\right)\to {\mathrm{Al}}_2{\left({\mathrm{SO}}_4\right)}_3\left(\mathrm{aq}\right)+{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)$

Balance the following equation:
$\mathrm{Cu}\left(\mathrm{s}\right)+{\mathrm{H}}_2{\mathrm{SO}}_4\left(\mathrm{aq}\right)\to {\mathrm{CuSO}}_4\left(\mathrm{aq}\right)+{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)+{\mathrm{SO}}_2\left(\mathrm{g}\right)$