Question
2) A sample solution is given to you that may contain any or all of the following ions : Ag + , Pb 2+ ,
2) A sample solution is given to you that may contain any or all of the following ions : Ag+, Pb2+, and Ni2+. In an attempt to determine which cations are present, you add the following solutions. You found that no precipitate formed when either an aqueous solution of NaCl or an aqueous solution of Na2SO4 was added to the sample solution. However, a precipitate did form when you treated the sample solution with a basic solution of NaOH. Which cation or cations are present in the sample?
Give your reasoning.
3) Balance the following redox reaction. Identify the oxidizing and reducing agents, and the substances oxidized and reduced.
(a) Al(s) + NO2-(aq) --> AlO2-(aq) + NH3(aq) +NH3(aq) in basic solution.
(b) H2SO3(aq) + MnO4-(aq) -->Mn2+(aq) + HSO4-(aq) in acidic solution.
Step by Step Solution
There are 3 Steps involved in it
Step: 1
Get Instant Access to Expert-Tailored Solutions
See step-by-step solutions with expert insights and AI powered tools for academic success
Step: 2
Step: 3
Ace Your Homework with AI
Get the answers you need in no time with our AI-driven, step-by-step assistance
Get Started