Hydrate Pre-Lab Questions

Hydrate Pre-Lab Questions

Assessment

Assessment

Created by

Kristen Vanderveen

Chemistry

10th - 11th Grade

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15 questions

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1.

Multiple Choice

1 min

1 pt

Name the following hydrate: NaCl • 5H2O

sodium chloride

sodium monochloride pentahydrate

sodium chloride pentahydrate

sodium chloride hydrate

2.

Multiple Choice

1 min

1 pt

State the correct name for the following compound: Cr(NO3)3 ⋅ 9H2O

chromium nitrate nonahydrate

chromium (III) nitrate nonahydrate

chromium nitrogen trioxide nonahydrate

chromium (I) nitrate heptahydrate

chromium trinitrate nonahydrate

3.

Multiple Choice

5 mins

1 pt

A 15.67 g sample of a hydrate of magnesium carbonate was heated to drive off the waters of hydration. The mass after heating was reduced to 7.58 g. Calculate the percent water by mass in the original hydrate.

7.58 %

8.09%

48.37%

51.63%

4.

Multiple Choice

30 sec

1 pt

What is the correct chemical formula for barium hydroxide octahydrate?

Ba(OH)2 . 8H2O

Ba(OH)2 . H2O

8Ba(OH)2 . H2O

Ba . 8(OH)2

5.

Multiple Choice

30 sec

1 pt

Calculate the percent water by mass in cobalt(II) chloride dihydrate, CoCl₂•2H₂O.

36.0%

78.3%

21.7%

10.9%

13.9%

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