What element is reduced in the following reaction?

1 answer:

riadik2000 [5.3K]4 years ago

6 0

the oxidation states of the elements before and after the reaction is;
Pb oxidation state changes from 0 to +2
SO₄²⁻ ion there's no change in the oxidation state during the reaction
Au oxidation state changes from +3 to 0
reduction reactions are when there's a decrease in the oxidation state of the species
oxidation reactions are when theres an increase in the oxidation state of the species
the element where there's a decrease in oxidation state is Au.
Therefore Au gets reduced.
answer is B) Au

You might be interested in

4. A gas occupies 1.56 L at 2.00 atm. What will be the volume of this gas if the pressure becomes 4.00 atm?

tekilochka [14]

Answer:

0.78 L

Explanation:

From Boyle's Law :

P₁V₁ = P₂V₂

Here :

P₁ = 2.00 atm
V₁ = 1.56 L
P₂ = 4.00 L

Solving :

V₂ = P₁V₁ / P₂
V₂ = 2 x 1.56 / 4
V₂ = 1.56 / 2
V₂ = 0.78 L

5 0

2 years ago

NEED AWNSER ASAP PLEASE, I WILL MAKE YOU BRAINLY!!!

tatiyna

Answer:

When fossil fuels are burned carbon and hydrogen react with oxygen in air to carbon dioxide (CO2) and water (H2O). During this reaction heat is released which further amplifies the reaction. Electricity is generated by transforming mechanical energy (heat) to electrical energy in a turbine or generator.

7 0

3 years ago

fish give off the compound ammonia which has a pH above 7 to which class of compounds does ammonia belong

jasenka [17]

Answer:
The compound ammonia given by fish is alkaline

Explanation:
We can classify elements/compounds based on their pH values into three types:
acids: these are compounds having pH value lower than 7
neutral: these are compounds having pH value equal to 7
alkalies: these are compounds having pH values higher than 7

This is shown in the attached image

We are given that the pH of the compound ammonia generated by the fish is above 7.
According to the above explanation, compound ammonia would be an alkaline compound.

Hope this helps :)