Aqueous solutions of sodium sulfide and copper (II) chloride are mixed together.
ID: 785002 • Letter: A
Question
Aqueous solutions of sodium sulfide and copper (II) chloride are mixed together. Which statement is correct?
A gas and water is formed.
Chlorine gas will form.
NaCl will precipitate from solution.
CuS will precipitate from solution.
No reaction will occur.
Predict the products of the following single replacement reaction if iron is more active than copper. Fe(s) + CuSO4(aq) --> ?
Cu(s) + FeSO4(aq)
CuS(s) + Fe2SO4(aq)
Fe(s) + Cu(s) + SO4(aq)
FeO(s) + CuSO3(aq)
FeCuSO4(aq)
How many grams of potassium chloride (MW=74.6 g/mol) are present in 37.2 mL of a 0.250 M KCl solution?
0.364 g
0.694 g
9.30 g
11.1 g
1.26 x 10-4 g
What is the molar concentration of chloride ion in a solution prepared by dissolving 22.0 g of calcium chloride (FW=111.1 g/mol) to 4.0 L with water?
0.013 M
0.025 M
0.050 M
0.10 M
0.63 M
How much water would be needed to prepare 500.0 mL of a 0.100 M NaOH solution from a 2.0 M NaOH solution?
2.0 mL
25.0 mL
50.0 mL
475.0 mL
500.0 mL
What volume of 1.2 M HCl is required to react exactly with 3.5 g of Ca(OH)2 (MW=74.1g/mol) according to the following reaction?
2 HCl + Ca(OH)2 --> CaCl2 + 2 H2O
19 mL
24 mL
38 mL
79 mL
94 mL
Aqueous solutions of sodium sulfide and copper (II) chloride are mixed together. Which statement is correct? Predict the products of the following single replacement reaction if iron is more active than copper. Fe(s) + CuSO4(aq) rightarrow ? How many grams of potassium chloride (MW=74.6 g/mol) are present in 37.2 mL of a 0.250 M KCl solution? What is the molar concentration of chloride ion in a solution prepared by dissolving 22.0 g of calcium chloride (FW=111.1 g/mol) to 4.0 L with water? How much water would be needed to prepare 500.0 mL of a 0.100 M NaOH solution from a 2.0 M NaOH solution? What volume of 1.2 M HCl is required to react exactly with 3.5 g of Ca(OH)2 (MW=74.1g/mol) according to the following reaction?Explanation / Answer
1)CuS will precipitate from solution
2)Cu(s) + FeSO4(aq)
3)0.694 g
4)0.10 M
5)475.0 mL
6)79 mL
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