Question

Which of the following chemical reaction results in the evolution of a gas?

• A. The reaction between vinegar and baking soda
• B. Displacement reaction of copper by Iron from copper sulphate
• C. None of the above
• D. The reaction between HCl and NaOH

Answer 1

The correct option is A The reaction between vinegar and baking soda

The reaction between vinegar (acetic acid) and baking soda( Sodium bicarbonate) is :
${\mathrm{CH}}_3\mathrm{COOH}\left(l\right)+{\mathrm{NaHCO}}_3\left(s\right)\to {\mathrm{CH}}_3\mathrm{COONa}\left(\mathrm{aq}\right)+H_{2}O\left(l\right)+{\mathrm{CO}}_2\left(g\right)$