Top answers

Chemistry
A Level

Balance the following redox equation: PbO2 + SO32- ==> Pb2+ + SO42-

To balance redox equations, do the following steps:
-Divide into 2 half equations
-Balance the formula EXCEPT for oxygen and hydrogen
-Balance the number of oxygens by adding water
...

Answered by Zain C. Chemistry tutor
11881 Views

How does HBr add across a double bond? Predict the regiochemistry when HBr is reacted with 2-methylpropene

When HBr is dissolved in solution it dissociates in its two major components: H+ and Br-. The acidic environment promotes nucleophilic of the alkenes to the electrophilic protons to ...

Answered by Ryan M. Chemistry tutor
2393 Views

What affects the boiling point of an alkane and why?

There are two ways to affect the boiling point, both of which are to do with London forces found between molecules. Firstly, the chain length. If the chain length increases, the molecules will have a larg...

Answered by Thomas B. Chemistry tutor
10120 Views

How do you calculate the units for Kc?

The units for Kc changes depending on the concentrations of each reactant and product in the equation. It can also be possible that there are no units for Kc because the concentrations at the top and the ...

Answered by Huma M. Chemistry tutor
52290 Views

Why does the pH of neutral water drop when it is left out in an uncovered container on a worktop for a long period of time?

This question tests your knowledge on; the properties of non-metal oxides in solution, the concept of equilibrium, pH.

Non-metal oxides such as (CO2, P4O10, SO2, etc) are acidic in solution. When l...

Answered by Narutoshi G. Chemistry tutor
2080 Views

We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo
Cookie Preferences