## Prediction of precipitation

Chemistry and homework help forum.

Organic Chemistry, Analytical Chemistry, Biochemistry, Physical Chemistry, Computational Chemistry, Theoretical Chemistry, High School Chemistry, Colledge Chemistry and University Chemistry Forum.

Share your chemistry ideas, discuss chemical problems, ask for help with scientific chemistry questions, inspire others by your chemistry vision!

Please feel free to start a scientific chemistry discussion here!

Discuss chemistry homework problems with experts!

Ask for help with chemical questions and help others with your chemistry knowledge!

Moderators: expert, ChenBeier, Xen

Dhamnekar Winod
Sr. Staff Member
Posts: 156
Joined: Sat Nov 21, 2020 10:14 am
Location: Mumbai[Bombay],Maharashtra State,India

### Prediction of precipitation

The salt MX2 has a $$K_{sp}$$ of 4.64e-9. If equal volumes of 0.00061 M M(NO3)2 and 0.001 M NaX are mixed, will solid form? M represents metal and X represents anion.

I computed the answer as follows: Firstly, we have to determine the concentration of M and X after mixing them. As their volumes are equal, it will be half of the initial concentration.
$$Q_{ion}=0.000305* (2*0.0005)^2=3.05e-10$$ which is less than the given $$K_{sp}=4.64e-9$$, hence precipitation won't form.
Last edited by Dhamnekar Winod on Thu Jun 10, 2021 7:17 am, edited 1 time in total.
Any science consists of the following process. 1) See 2)Hear 3)Smell,if needed 4)Taste, if needed 5)Think 6)Understand 7)Inference 8)Take decision [Believe or disbelieve, useful or useless, true or false, cause or effect, any other criteria]
ChenBeier
Distinguished Member
Posts: 773
Joined: Wed Sep 27, 2017 7:25 am
Location: Berlin, Germany

### Re: Prediction of precipitation

Depends which kind of metal and which anion.