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3 years ago

Why does increasing the temperature of water increase the rate of chemical reaction in the graph

Chemistry

1 answer:

Nady [450]3 years ago

8 0

Answer:

Explanation:

Increasing the temperature increases reaction rates because of the disproportionately large increase in the number of high energy collisions.

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In the reaction Mg (s) + 2HCl (aq) -> H2 (g) + MgCl2 (aq), how many grams of hydrogen gas will be produced from 300 millilite

d1i1m1o1n [39]

Mg(s) + 2HCl(aq) = H₂(g) + MgCl₂(aq)

v=300 ml=0.3 l
c=4 mol/l

n(HCl)=vc

m(H₂)/M(H₂)=n(HCl)/2

m(H₂)=M(H₂)vc/2

m(H₂)=2.0g/mol·0.3 l · 4mol/l /2 = 1.2 g

1.2 grams of hydrogen gas will be produced

5 0

4 years ago

In an extraction experiment similar to your expt. 4, you attempt to separate 2-naphthol from cyclohexane, both of which are diss

Viktor [21]

Answer:

[a]. 108 mL.

[b].

1. use HCL in washing for the neutralization of NaOH.

2. Wash with water.

3. make use of MgSO4 to remove water traces.

4. Evaporate to get the pure cyclohexane

Explanation:

The chemical equation for the reaction between 2-naphthol and Sodium hydroxide is given below as:

C₁₀H₈O + NaOH --------------------------------------------------> C10H7O⁻ Na⁺ + H₂O.

The C10H7O⁻ Na⁺ is the aqueous phase.

The molarity of Sodium Hydroxide is = [ (mass of sodium hydroxide ) ÷ molar mass sodium hydroxide × volume] × 1000.

The molarity of sodium hydroxide = [ (5/40) × 100] × 1000 = 1.25 M.

The number of moles of 2-naphthol = mass / molar mass = 20 / 144.17 = 0.138 moles.

Recall that, the formula for the number of moles = concentration × volume. Therefore, the volume of sodium hydroxide is given below as:

Volume of sodium hydroxide = the number of moles of sodium hydroxide ÷ concentration of sodium hydroxide = 0.138 ÷ 1.25 = 0.108L = 108 mL.

In order to efficiently isolate relatively pure cyclohexane from the ether layer, the following process must be followed:

1. use HCL in washing for the neutralization of NaOH.

2. Wash with water.

3. make use of MgSO4 to remove water traces.

4. Evaporate to get the pure cyclohexane

7 0

3 years ago

Describe the arrangement and motion of the particles in liquid stearic acid.<br>

Oliga [24]

In liquids, particles are quite close together and move with random motion throughout the container. Particles move rapidly in all directions but collide with each other more frequently than in gases due to shorter distances between particles.

3 0

3 years ago

Read 2 more answers

What mass of Fe can be produced by the reaction of 75.0 g CO with excess Fe2O3 according to the equation: Fe2O3(s) + CO(g) → Fe(

lyudmila [28]

Here we have to get the mass of the iron (Fe) produces in the reaction between ferric oxide (Fe₂O₃) and carbon monooxide (CO) to produce carbon dioxide and iron.

The amount of Fe produced in the reaction is B. 99.7g.

The balanced form of the reaction given is: Fe₂O₃ (s) + 3CO = 2Fe + 3CO₂.

Now as per the reaction 3 moles of CO produce 2 moles of Fe.

The molar mass of CO and Fe are 28.01g/mol and 55.845g/mol.

Thus (3×28.01) 84.03g of CO produces 111.69g of Fe.

Hence, 75.0g of CO produces $\frac{111.69}{84.03}$ ×75.0 = 99.687g of Fe or 99.7g of Fe.

A. If in the reaction 49.8g Fe is produced in the reaction then $\frac{84.03}{111.69}$ ×49.8 = 37.467g of CO should react. Thus the option is wrong.

C. To produce 224g of Fe $\frac{84.03}{111.69}$ ×224 = 168.526g of CO will consumed. Thus it is wrong statement.

D. To generate 299g of Fe $\frac{84.03}{111.69}$ ×299 = 224.952g of CO will consumed. Thus it is wrong statement.

7 0

4 years ago

Read 2 more answers

Our exact distance from the sun varies throughout the year due to Earth's elliptical

zloy xaker [14]

Answer:

The earth being tilted towards the sun in the summer.

Explanation:

Even though the earth is in the same place, the angle towards the sun is different.

3 0

3 years ago