In all the following exercises M represents metal and X represents anion.

a) The salt, MX_{2} has a K_{sp} of 2.00e-6. If equal volumes of 0.0059M M(NO_{3})_{2} and 0.01M NaX are mixed, will solid form?

b)The salt, MX_{3} has a K_{sp} of 2.07e-10. If equal volumes of 0.0029M M(NO_{3})_{3} and 0.02M NaX are mixed, will solid form?

c)The salt, MX has a K_{sp} of 2.13e-6. If equal volumes of 0.0062M M(NO_{3})_{2} and 0.03M Na_{2}X are mixed, will solid form?

My worked out answers:

a)Q_{ion}=0.00295*0.01^{2}=2.95e-7 which is less than the given K_{sp} 2.00e-6, hence solid won't form.

b)Q_{ion}=0.00145*(0.03)^{3}=3.915e-8 which is greater than the given K_{sp} 2.07e-10, hence, solid will form.

c)Q_{ion}=0.0031*0.015= 465e-5 which is greater than the given K_{sp} 2.13e-6, hence solid will form.

**What is your opinion about these answers? Are these answer correct? In my opinion, all these three answers are correct. **