1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
anastassius [24]
3 years ago
5

Based on solubility rules what ions in water might interfere with the analysis of calcium ions by precipitation of calcium carbo

nate
Chemistry
2 answers:
Pavlova-9 [17]3 years ago
6 0
First, we must know what happens in the precipitation reaction. This type of reaction is a double replacement reactions. It is consists of two reactant compounds which interchange cations and anions to form two products. One of the products is an insoluble solid called a precipitate. For the precipitation of CaCO₃, there are two consecutive reactions involved:

1. Slaking of quicklime, CaO
    CaO + H₂O ⇒ Ca(OH)₂

2. Precipitation
    Ca(OH)₂ + CO₂ ⇒ CaCO₃ + H₂O

The ions that make up the H₂O molecule are H⁺ and OH⁻. According to solubility rules, the cation (positively charged ion) is likely to be attracted to an anion (negatively charged ion). Together, they form an ionic bond. This type of bond is when there is a complete transfer of electrons between the two. The Ca²⁺ cation lacks 2 electrons, while the anion OH⁻ has an excess 1 electron. In order to be stable, 1 Ca²⁺ ion and 2 OH⁻ ions must combine.

Therefore, the answer is OH⁻ ion.
RideAnS [48]3 years ago
4 0

The right answer is OH- (hydroxide).


Water can ionize in (H +) and (OH-). OH- can bind to calcium (the calcium of CaCl2 for example) to form Ca (OH) 2.


Ca++ + 2 OH- ==> Ca (OH) 2


Calcium hydroxide is a mineral chemical body, an ionic compound of the calcium cation and the hydroxide anion.

You might be interested in
How many moles are in 83.1g of CaBr2​
9966 [12]

Answer:

0.416 mol CaBr₂

General Formulas and Concepts:

<u>Chemistry - Atomic Structure</u>

  • Reading a Periodic Table
  • Using Dimensional Analysis

Explanation:

<u>Step 1: Define</u>

83.1 g CaBr₂

<u>Step 2: Identify Conversions</u>

Molar Mass of Ca - 40.08 g/mol

Molar mass of Br - 79.90 g/mol

Molar Mass of CaBr₂ - 40.08 + 2(79.90) = 199.88 g/mol

<u>Step 3: Convert</u>

<u />83.1 \ g \ CaBr_2(\frac{1 \ mol \ CaBr_2}{199.88 \ g \ CaBr_2} ) = 0.415749 mol CaBr₂

<u>Step 4: Check</u>

<em>We are given 3 sig figs. Follow sig fig rules and round.</em>

0.415749 mol CaBr₂ ≈ 0.416 mol CaBr₂

8 0
3 years ago
If 54 g of Al reacted with 160 g of O2, find out the weight of product​
Oxana [17]

Answer:

number of Al atom =54÷27=2atom of Al. number of o atom = 160÷16=10 atom of o . =214U MASS of ALO2.

4 0
3 years ago
Meanders are characteristics of a young river. True False
Rainbow [258]
True would be the answer
7 0
3 years ago
gThe mole fraction of potassium nitrate in an aqueous solution is 0.0194. The solution's density is 1.0627 g/mL. What is the mol
xxMikexx [17]

Answer:

0.595 M

Explanation:

The number of moles of water in 1L = 1000g/18g/mol = 55.6 moles of water.

Mole fraction = number of moles of KNO3/number of moles of KNO3 + number of moles of water

0.0194 = x/x + 55.6

0.0194(x + 55.6) = x

0.0194x + 1.08 = x

x - 0.0194x = 1.08

0.9806x= 1.08

x= 1.08/0.9806

x= 1.1 moles of KNO3

Mole fraction of water= 55.6/1.1 + 55.6 = 0.981

If

xA= mole fraction of solvent

xB= mole fraction of solute

nA= number of moles of solvent

nB = number of moles of solute

MA= molar mass of solvent

MB = molar mass of solute

d= density of solution

Molarity = xBd × 1000/xAMA ×xBMB

Molarity= 0.0194 × 1.0627 × 1000/0.981 × 18 × 0.0194×101

Molarity= 20.6/34.6

Molarity of KNO3= 0.595 M

8 0
3 years ago
The Connecticut Bueller theory assumes that particles of an ideal gas are
postnew [5]

<span>are in random, constant, straight-line motion</span>

<span>
</span>

<span>your welcome :)</span>

<span>all I Ask is for a thank u peaceeee</span>


3 0
2 years ago
Other questions:
  • Which of the following shows both the correct formula and correct name of an acid?
    13·2 answers
  • How are elements arranged in the periodic table? By number or by mass?
    5·2 answers
  • Aq. sodium oxalate reacts with aq calcium chioride to form sd nd soum ce
    14·1 answer
  • suppose you wanted to change the rate of a chemical reaction. what might you change in the reaction? explain the factor
    13·1 answer
  • The beta oxidation pathway degrades activated fatty acids (acyl-CoA) to acetyl-CoA, which then enters the citric acid cycle. Add
    11·2 answers
  • https://Suppose that the concentration of CO2 available for the Calvin cycle decreased by 50% (because the stomata closed to con
    9·1 answer
  • How many atoms are in 15 moles of cadmium?
    12·2 answers
  • which of these pieces of equipment would be the most appropriate for precisely measuring 29 mL of liquid? Explain your reasoning
    15·1 answer
  • An object at a distance of 30 cm from a concave mirror gets its image at the same point. The focal length of the mirror is​
    6·1 answer
  • The climate of an area can be different from its weather. Which of the following statements describes the climate of an area?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!