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Trava [24]
3 years ago
10

What reagents can be used to test for unsaturation of hydrocarbons?​

Chemistry
1 answer:
REY [17]3 years ago
3 0

Answer:

Bromine test is used to test the unsaturation of hydrocarbons.

Explanation:

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Pleaaaaase helppppppppppppp ASAP
laiz [17]

Answer:

Explanation:

a) The forward reaction is exothermic, hence when temperature is increased the equilibrium shift towards the reactants side to get rid of the excess energy. This will mean that more reactants are produced decreasing yield

b) There are a fewer number of moles of gas on the right side compared to the left side (Just count the coefficients before each compound) so a higher pressure will mean that the equilibrium will shift towards the products side in order to decrease the pressure. This will mean that more products are formed increasing yield

c) When something is powdered it's surface area to volume ratio increases. A higher surface area means that the particles around it have more area to work on so the frequency of collisions will increase increasing the rate of reaction. This is why iron is powdered.

4 0
3 years ago
The reactants of two chemical equations are listed. Equation 1: PbNO3 + Mg Equation 2: PbNO3 + KI Based on the type of reaction,
Vika [28.1K]

Answer:

Equation 2, because K being more reactive, exchanges position with Pb in PbNO3.

Explanation:

Hello there!

In this case, according to the given reactions, it is possible to realize that according to the reactivity series, since K is is group 1A of alkali metals, we infer it is by far more reactive than magnesium, for that reason last two choices can be easily discarded. Now, considering equation 2, it would be necessary to complete it to figure out the correct option:

Pb(NO_3)_2 + KI \rightarrow PbI_2+KNO_3

Whereas it can be seen that potassium exchanges position with Pb according to the double displacement reaction; therefore, the correct answer is "Equation 2, because K being more reactive, exchanges position with Pb in PbNO3".

Best regards!

8 0
3 years ago
An ionic bond is a bond between ____.
exis [7]

An ionic bond is a bond which occurs when there is a difference in the electronegativity of the atoms. One atom which has a stronger electronegativity tends to steal the electron of the other less electronegative atom hence making it more negative (anion), while the other becomes a cation. So answer is:

<span>b. a cation and an anion</span>

4 0
3 years ago
Read 2 more answers
The reaction between potassium chlorate and red phosphorus takes place when you strike a match on a matchbox. If you were to rea
mihalych1998 [28]

<u>Answer:</u> The mass of tetraphosphorus decaoxide formed is 64.81g

<u>Explanation:</u>

To calculate the number of moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}   ....(1)

  • <u>For potassium chlorate:</u>

Given mass of potassium chlorate = 93.3 g

Molar mass of potassium chlorate = 122.55 g/mol

Putting values in above equation, we get:

\text{Moles of potassium chlorate}=\frac{93.3g}{122.55g/mol}=0.761mol

For the given chemical reaction:

10KClO_3+12P\rightarrow 3P_4O_{10}+10KCl

Red phosphorus is given in excess . So, it is considered as an excess reagent and potassium chlorate is considered as a limiting reagent.

By Stoichiometry of the reaction:

10 moles of potassium chlorate reacts with 3 moles of tetraphosphorus decaoxide

So, 0.761 moles of potassium chlorate will react with = \frac{3}{10}\times 0.761=0.2283moles of tetraphosphorus decaoxide

Calculating the mass of tetraphosphorus decaoxide by using equation 1, we get:

Molar mass of tetraphosphorus decaoxide = 283.886 g/mol

Moles of tetraphosphorus decaoxide = 0.2283 moles

Putting values in equation 1, we get:

0.2283mol=\frac{\text{Mass of tetraphosphorus decaoxide}}{283.886g/mol}\\\\\text{Mass of tetraphosphorus decaoxide}=64.81g

Hence, the mass of tetraphosphorus decaoxide formed is 64.81g

5 0
3 years ago
Which of the following would have the best thermal insulation properties?
adoni [48]
Thermal instillation works so to me the smartest answer is a cotton sweater to keep heat in
8 0
3 years ago
Read 2 more answers
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