Question

PLEASE ANSWER ALL QUESTIONS

1) In the following reaction: KOH + CuNO₃ → KNO₃ + CuOH

A. KOH and KNO₃ are reactants

B. KNO₃ and CuOH are reactants

C. CuOH and KOH are products

D. KOH and CuNO₃ are reactants

2) Atoms of the nonmetallic elements generally form ions by

A. gaining electrons, forming positive ions.

B. gaining electrons, forming negative ions.

C. losing electrons, forming positive ions.

D. losing electrons, forming negative ions.

3) Which contains both ionic and covalent bonds?

A. KCl

B. NH₃

   C. KNO₃

D. [NO₂]^-1

Answer 1

1) D is the correct one as both KOH and CuNO3 are on the left side of the arrow( from where arrow starts), they are the reactants.

2) Atoms of nonmetallic elements generally form ions,

B) gaining electrons, forming negative ions.

Ex- Non metallic element O form O2- by gaining two electrons.

Non metallic element F form F- by gaining one electron.

3) C) KNO3 contains both ionic and covalent bonds. K+ forms ionic bond with NO3- but in NO3-, covalent bonds are present in between N and O atoms.