A sample contains MgNH₄(PO₄)₂,Sb₂S₃,KBr,Cr(OH)₃,and PbCl₂.Identify the soluble ions after the addition of 6 M HCl; then H₂S and 0.2 M HCl; then OH^-to a pH of 8; and then (NH₄)₂HPO₄ with NH₃. A) MgNH₄(PO₄)₂ B) Sb₂S₃ C) KBr D) Cr(OH)₃ E) PbCl₂

Question

Quizplus · Accepted Answer

After the addition of 6 M HCl, all ions except KBr will be soluble. KBr is a soluble salt, so it will not have any soluble ions after the addition of HCl. Therefore, the only answer choice is C.

A Sample Contains MgNH4(PO4)2, Sb2S3,KBr,Cr(OH)3,and PbCl2

A Sample Contains MgNH₄(PO₄)₂,Sb₂S₃,KBr,Cr(OH)₃,and PbCl₂