1)Which of the following will bubble in the presence of 1.0 M hydrochloric acid

Question

1)Which of the following will bubble in the presence of 1.0 M hydrochloric acid and have a significant mass loss when heated in a crucible?

NiCl2, K2CO3, LiNO3, NaBr, NaCl, AgNO3, KHCO3 (more than one can be selected)

2)Which of the following will show a precipitate when 2.0 M sulfuric acid is added?

(more than one can be selected)

3)Which of the following will show no effect when 2.0 M sulfuric acid is added?

NiBr2

4)Which of the following will form a precipitate with the addition of 1.0 M potassium hydroxide?

Explanation / Answer

1) Significant mass loss will take place in the below materials

NaHCO3, K2CO3

2) CaCl2 show a precipitate when 2.0 M sulfuric acid

3) NaNO3 and NaBr show no effect when 2.0 M sulfuric acid

4) MgBr2 form a precipitate with the addition of 1.0 M potassium hydroxide

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