Snow melting is a physical change. True False
2 answers:
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Answer:
Row 1
pOh=14-pH=14-5.7=8.3
Hence, acidic
Row 2
pH=14-pOH=14 - 9.4 = 4.6
Hence, acidic
Row 3
pH = 8.15
pOH=14-pH=14 - 8.15 = 5.8
Hence, basic
Row 4
pOH = 5.70
pH=14-pOH=14 - 5.70 = 8.3
Hence, basic
Answer : The correct option is, (a) Synthesis
Explanation :
Synthesis reaction : A chemical reaction where multiple substances or reactants combine to form a single product.
It is represented as,
Combustion reaction : A chemical reaction in which a hydrocarbon react with the oxygen to give product as carbon dioxide and water.
It is represented as,
Single replacement reaction : A chemical reaction in which the more reactive element replace the less reactive element.
It is represented as,
In this reaction, A is more reactive element and B is less reactive element.
Double replacement reaction : It is a type of chemical reaction where a positive cation and a negative anion of two reactants exchange places to form two new products.
It is represented as,
(X and A are the cations, Y and B are the anions)
The given reaction is,
In this reaction, calcium combine with the chloride to form calcium chloride as a product.
Hence, the given type of reaction is a synthesis reaction.