All categories

3 years ago

Aqueous sodium hydroxide forms a light blue precipitate. What is the formula of the blue precipitate?

Chemistry

1 answer:

lisabon 2012 [21]3 years ago

8 0

Answer:

Cu2+(aq) + 2OH-(aq) => Cu(OH)2(s)

Explanation:

Use of aqueous sodium hydroxide is a precipitation reaction to test for anions or cations. Aqueous sodium hydroxide in a precipitate test forms a insoluble precipitates along with some colors characteristics.

Aqueous sodium hydroxide (NaOH) when mixed with copper(II) (Cu2+) forms a blue precipitate. The formula is as follows:

Cu2+(aq) + 2OH-(aq) => Cu(OH)2(s)

You might be interested in

What can you conclude from the fact that electrons orbit far away from atomic nuclei?

suter [353]

Electrons are extremely small. Atoms are comprised mostly of empty space. Protons have a positive charge.
Hope this helps.

5 0

3 years ago

How many particles are in 47.7 g of Magnesium? (Round the average

Lynna [10]

Answer:

1.18 × 10²⁴ particles Mg

General Formulas and Concepts:

Chemistry - Atomic Structure

Reading a Periodic Table
Using Dimensional Analysis
Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

Explanation:

Step 1: Define

47.7 g Mg

Step 2: Identify Conversions

Avogadro's Number

Molar Mass of Mg - 24.31 g/mol

Step 3: Convert

$47.7 \ g \ Mg(\frac{1 \ mol \ Mg}{24.31 \ g \ Mg} )(\frac{6.022 \cdot 10^{23} \ particles \ Mg}{1 \ mol \ Mg} )$ = 1.18161 × 10²⁴ particles Mg

Step 4: Check

We are given 3 sig figs. Follow sig fig rules and round.

1.18161 × 10²⁴ particles Mg ≈ 1.18 × 10²⁴ particles Mg

3 0

2 years ago

Which of the following atoms has the same number of neutrons as 19F? (2 points)

Lelu [443]

I dont know the answer choices but if isotopes is there then go with Isotopes

5 0

2 years ago

What causes the periodic (recurring) patterns seen in the periodic table?

IgorC [24]

Valence elections, electron affinity, electronegativity, atomic radius

8 0

3 years ago

How do a strong electrolyte, weak electrolyte, and non-electrolyte differ in the number of ions each produces when dissolved in

Dmitrij [34]

Strong electrolytes are completely ionised in solution.
Weak ones are only partially ionised.
Non electrolytes do not form ions

3 0

3 years ago