A chemical reaction in which two or more substances undergo a chemical union to form a more complex substance is a _______ react
2 answers:
Answer : The correct option is, (D) Combination
Explanation :
- Double replacement reaction : A chemical reaction in which a positive cation and a negative anion of the two reactants exchange places to give two new products or compounds.
The general representation of this reaction is,
(A and C are the cations, B and D are the anions)
- Substitution reaction : A chemical reaction in which a more reactive element displaces the least reactive element.
The general representation of this reaction is,
- Decomposition reaction : A chemical reaction in which a bigger compound breaks into two or more smaller compounds or elements.
The general representation of this reaction is,
- Combination reaction : A chemical reaction in which two or more substances react to form a more complex substance.
The general representation of this reaction is,
Hence, the correct option is, (D) Combination
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Answer:
1) 0.18106 M is the molarity of the resulting solution.
2) 0.823 Molar is the molarity of the solution.
Explanation:
1) Volume of stock solution =
Concentration of stock solution =
Volume of stock solution after dilution =
Concentration of stock solution after dilution =
( dilution )
0.18106 M is the molarity of the resulting solution.
2)
Molarity of the solution is the moles of compound in 1 Liter solutions.
Mass of potassium permanganate = 13.0 g
Molar mass of potassium permangante = 158 g/mol
Volume of the solution = 100.00 mL = 0.100 L ( 1 mL=0.001 L)
0.823 Molar is the molarity of the solution.