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3 years ago

What will be seen when lithium chloride reacts with sulphuric acid?

Chemistry

2 answers:

Yuri [45]3 years ago

6 0

Answer:

it changes in hydrogen chloride and sodium sulfate

UkoKoshka [18]3 years ago

3 0

Answer:

Lithium chloride react with sulfuric acid to produce lithium hydrosulfate and hydrogen chloride. ... Lithium chloride - solid. This reaction takes place at a temperature near 50°C.

hope it helps

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Sodium metal and water react to create sodium hydrogen and hydrogen gas through the unbalanced equation.

Maurinko [17]

Answer:

Theoretical yield = 2.5 g

Explanation:

Given data:

Mass of sodium = 79.7 g

Mass of water = 45.3 g

Theoretical yield of hydrogen gas = ?

Solution:

Chemical equation:

2Na + 2H₂O → 2NaOH + H₂

Number of moles of sodium:

Number of moles = mass/ molar mass

Number of moles = 79.7 g / 23 g/mol

Number of moles = 3.5 mol

Number of moles of water:

Number of moles = mass/ molar mass

Number of moles = 45.3 g / 18g/mol

Number of moles = 2.5 mol

Now we will compare the moles of hydrogen gas with water and sodium.

H₂O : H₂

2 : 1

2.5 : 1/2×2.5 =1.25 mol

Na : H₂

2 : 1

3.5 : 1/2×3.5 =1.75 mol

water will be limiting reactant.

Theoretical yield:

Mass = number of moles × molar mass

Mass = 1.25 mol × 2 g/mol

Mass = 2.5 g

8 0

3 years ago

69g of sodium reacts with chlorine to produce sodium chloride. calculate the number of moles of chlorine required to react with

Rus_ich [418]

Answer:

3 moles of $Cl^{-}$ is needed for $Na^{+}$ to be fully consumed.

Explanation:

For the balanced equation:

$Na^{+} + Cl^{-}$ ⇒ $NaCl$

First, find the moles of Na corresponding to the 69g used the general definition of mol:

$mol Na^{+} = \frac{69 g}{23 g/mol } = 3mol$

We observe that the equation is balanced and the stoichiometric ratio between them is 1: 1.

According to this, one mole of Na will react with one mole of Cl.

3 moles of $Cl^{-}$ is needed for $Na^{+}$ to be fully consumed.

7 0

3 years ago

Which is the empirical formula for hydrogen peroxide

KiRa [710]

H2O2 i think this is it

8 0

4 years ago

Read 2 more answers

Electromagnetic radiation with wavelength of 745 nm appears as red lighting to human eye. the energy of the photon is this light

trapecia [35]

Answer:The energy of the photon is this light is $2.66\times 10^{-19} Joules$ .

Explanation:

Wavelength of the electromagnetic radiation = 745 nm = $7.45\times 10^{-7} m$

$1m =1\times 10^{-9}nm$

Energy of the photon will be given by Plank's equation:

$E=\frac{hc}{\lambda }$

$E=\frac{6.626\times 10^{-34} J s\times 3\times 10^8 m/s}{7.45\times 10^{-7} m}$

$E=2.66\times 10^{-19} Joules$

The energy of the photon is this light is $2.66\times 10^{-19} Joules$ .

4 0

4 years ago

Read 2 more answers

2 ways friction is helpful and 2 ways it does not

iris [78.8K]

Benefits of friction.

1. Walking. Friction between the soles of our shoes and the ground enables us to walk. The sole of the shoe is held to the ground through friction. This is what is termed as "grip" of the shoe. The more grip a shoes offers, the better and faster we can walk.

2. Writing. Writing using a pen requires friction. It is impossible to hold a pen in the hand without friction because it would slip out. Also the graphite point of the pencil would not make a mark on the paper without friction.

Drawbacks of friction

1. Drag. An aircraft taking off experiences significant friction between it and the air resulting in drag, so much fuel has to be used to create energy to overcome the wind resistance.

2. Surface hindrance. Friction makes moving something heavy from one part of a room to another very difficult. Sliding a large box across the flour takes a lot of energy due to friction between the box and the floor.

8 0

3 years ago