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Dominik [7]
3 years ago
14

Which reaction leads to the formation of a precipitate?

Chemistry
2 answers:
scoray [572]3 years ago
7 0

Answer: 2Ca(OH)_2(aq)+2FeCl_3(aq)\rightarrow CaCl_2(aq)+2Fe(OH)_2(s)

Explanation: A double displacement reaction is one in which exchange of ions take place. The salts which are soluble in water are designated by symbol (aq) and those which are insoluble in water and remain in solid form are represented by (s) after their chemical formulas.

The reactions in which one of the product is formed as a solid are called as precipitation reactions.

a) 2Cr(NO_3)_3(aq)+3FeSO_4(aq)\rightarrow Cr_2(SO_4)_3(aq)+3FeNO_3(aq)

b) 2RbF(aq)+CuSO_4(aq)\rightarrow Rb_2(SO_4)(aq)+CuF_2(aq)

c) 2Ca(OH)_2(aq)+2FeCl_3(aq)\rightarrow CaCl_2(aq)+2Fe(OH)_2(s)

Brrunno [24]3 years ago
6 0

2Ca(OH)2(aq) + 2FeCl3(aq) on the dead locs

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Can the ratio of hydrogen to oxygen change if a solute is dissolved in the water
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Answer:

Water molecules feature the combinations of hydrogen and oxygen atoms in a 2:1 ratio. Since they are present in a fixed ratio of mass, water molecules obey the law of constant proportions. Water is formed when two molecules of the diatomic hydrogen gas, combine with one molecule of the diatomic oxygen gas to produce two molecules of water

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When you add an inert gas, the reaction
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Explanation:

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The Brazos River is a major river in Texas. In many parts of the Cross Timbers and Prairies ecoregion, the river has formed tall
musickatia [10]

Answer:

Weather and erosion.

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8 0
3 years ago
What is the independent and dependent variable?
tigry1 [53]
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3 years ago
The rate constant for the decomposition reaction of H2O2 is 3.66 × 10−3 s−1 at a particular temperature. What is the concentrati
Pepsi [2]

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Explanation:

Expression for rate law for first order kinetics is given by:

t=\frac{2.303}{k}\log\frac{a}{a-x}

where,

k = rate constant = 3.66\times 10^{-3}s^{-1}

t = age of sample = 15.0 minutes

a = let initial amount of the reactant  = 10.0 M

a - x = amount left after decay process = ?

15.0\times 60s=\frac{2.303}{3.66\times 10^{-3}}\log\frac{10.0}{(a-x)}

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(a-x)=3.72M

The concentration of H_2O_2 in a solution after 15.0 minutes have passed is 3.72 M

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