Is the production of ammonium sulfate from sulfuric acid a redox reaction? Explain using oxidation numbers.

Explanation:

HSO4 --> (NH4)2SO4

Yes it is a redox reaction.

H is +1

S is +7

on the other side..

N is -3

H is +1 (always +1, thats part of the oxidation rule)

S is +6

O is always -2

So what happened? Sulfur lost one electron, so it is reduced. This is why is a redox reaction.

To accurately measure the final volume of a solution in a burette, it is important that you read of the measurement in the lower meniscus like for water and for substances like mercury you read it on the upper meniscus. This is the standard way of reading volumes in laboratory apparatus. Also, it should be that the apparatus standing vertically in a plain surface.