Answer:
Option B. Single replacement reaction
Explanation:
To know which option is correct, it is important that we know the definition of each option. The definition of each option is given below:
1. Synthesis reaction is a reaction in which two different elements or compound combine together to produce a new compound different from the two starting elements or compound. An example is illustrated below:
C + D —> E
2. Single replacement reaction is a reaction in which an element replaces or displaces another element in a compound. An example is illustrated below:
D + BC —> B + CD
3. Combustion reaction is a reaction in a substance react with oxygen to generate carbon dioxide (CO₂) and water (H₂O). An example can be seen when organic compound react with oxygen to produce carbon dioxide (CO₂) and water (H₂O). This is illustrated below:
CₓHᵧ + (x + y/4) O₂ —> xCO₂ + (y/2) H₂O
4. Double replacement reaction is a reaction in which the ions of the two reacting compound replaces one another to form new products. This is illustrated below:
X⁺Y¯ + U⁺V¯ —> X⁺V¯ + U⁺Y¯
5. Decomposition reaction is a reaction in which a large compound breaks down into two or more elements or compound. An example is illustrated below:
GH —> G + H
Now, observing the equation given in the question above:
Sn + 2HCl —> SnCl₂ + H₂
We can see that Sn replaces H in HCl to produce SnCl₂.
Therefore, the reaction is a single replacement reaction.
Answer: Tens place.
Step-by-step explanation: hmm wait one moment
Answer:
1. Answer is a. HCl gas
2. Answer is c. H2O liquid
3. Answer is a.H2O liquid
4. Answer is b.CO2 gas
5. Answer is c.CH3(CH2)3CH3
Explanation:
1. Which has the smallest enthalpy of fusion?
a. HCl gas
b.Li2O solid
c. MgO solid
d. H2O liquid
Answer is a. HCl gas
2. Which has the highest normal boiling point?
a.CH4 gas
b. NH3 gas
c. H2O liquid
Answer is c. H2O liquid
3. Which has the greatest heat of vaporization?
a.H2O liquid
b. H2Se gas
c. H2Te gas
d.H2S gas
Answer is a.H2O liquid
4. Which has the greatest vapour pressure at 25°C?
a. H2O liquid
b.CO2 gas
c. SiO2 solid
Answer is b.CO2 gas
5. Which has the least viscosity? a. HOCH2CH2OH syrupy liquid
b. CH3CH2OH liquid boiling point above 70 °C
c.CH3(CH2)3CH3 liquid, low boiling point below 40 °C
Answer is c.CH3(CH2)3CH3
