ionic compounds

[rell]

Hi everyone, i have a teacher who wants to use Copper cloride solution 0.1M & Sodium sulfide solution 0.1M.
My problem is i dont have any Sodium Sulfide.
Can someone suggest a subsitute?

Thanks Rell

[Jazz]

any of these solutions will do


AgNO3(aq) + CaCl2(aq)
• BaCl2 + Na2SO4
• Na2CO3 + CaCl2
positive ion.
• Silver nitrate
• Barium nitrate
• Lead (II) nitrate
• Strontium nitrate

negative ion.
• Solutions of:
• Sodium carbonate
• Sodium nitrate
• Sodium iodide
• Sodium Phosphate
• Sodium hydroxide
• Sodium sulfate

[rell]

Thanks Jazz
rell

[Robb]

HI All,

Great to see everyone on the ball with things, the networking is absolutely priceless for those questions and queries that many people have. Both new and old....

Cheers,

Robb.....

[nickykinz]

Should barium chloride form a precipitate with sodium hydroxide? The prac we have says it shouldn't but ours is and I just googled it and it says that Barium hydroxide is slightly insoluble.

[Graham Kemp]

What concentrations are you using, and in what proportion?

At 3.89 g/dL (20 °C), barrium hydroxide is reasonably soluable, but much less so than either sodium hydroxide (109%) or barium chloride (35.8%).
Ba(OH)2: 3.89 g/dL / 171.3425g/mol = 0.23 M.

You will not get a precipitate if you are mixing dilute solutions (~0.1M), but you may if mixing concentrated (~2.0M).

[nickykinz]

0.1M BaCl with 0.5M NaOH.