## Chemistry 12th Edition

Published by McGraw-Hill Education

# Chapter 4 - Reactions in Aqueous Solutions - Questions & Problems: 4.147

#### Answer

Please see the work below.

#### Work Step by Step

(a) We know that the required reaction is: $CaF_2+H_2SO_4\rightarrow 2HF+CaSO_4$ As the oxidation state of all the elements in the reaction is unchanged, the above reaction is not a redox reaction. (b) As $H_2SO_4$ is a strong oxidizing agent, it will quickly oxidize $Br^-$and $I^-$ to elemental $Br_2$ and $I_2$. (c) The required reaction is: $PBr_3+3H_2O\rightarrow 3HBr+H_3PO_3$

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