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CO(g) + 2H2(g) ⇌ CH3OH(g). A pressure of 100 atmospheres is used instead of atmospheric pressure. The higher pressure gives a greater yield of methanol and an increased rate of reaction. Explain why.

4 marksExplanation: Increasing the pressure (gases) of reactions increases the frequency of collisions, therefore increasing the rate of reaction .If the pressure is increased in a reaction involving gases, ...
GO
Answered by George O. • Chemistry tutor
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propene and steam react to form propan-2-ol. If the yield is 75% what mass of propene is required to produce 410g of propane-2-ol. [molar masses/gmol-1 propene=42, propan-2-ol =60]

remember the equation moles = mass/molar mass . We have the final grams of product and also the molar mass so we can calculate the number of moles we got from this. [410/60=6.83moles] It is asking for a 75% ...
JW
Answered by Jasmine W. • Chemistry tutor
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Define ferromagnetism, paramagnetism and diamagnetism, and determine whether the following complexes a) AgCl b) [Fe(CN)6]4- c) [Mn(CN)6]4- d) Co(H2O)6Cl2 are ferromagnetic, diamagnetic or paramagnetic giving a full justification for your reasoning.

Ferromagnetism is the type of magnetism in which the magnetic moments of certain atoms align with the external magnetic field. The examples of ferromagnetic metal are iron, nickel and cobalt.Paramagnetism is...
AB
Answered by Anna B. • Chemistry tutor
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In Stage 2 of a reaction, 40 kg of titanium chloride was added to 20 kg of sodium. The equation for the reaction is: TiCl4 + 4Na -> Ti +4NaCl Relative atomic masses (Ar): Na = 23 Cl = 35.5 Ti = 48 Explain why titanium chloride is the limiting reactant.

To calculate which of titanium chloride or sodium is limiting, convert both into mol so they are directly comparable. You cannot compare in masses because in equations there is a conservation of moles and no...
SL
Answered by Simran L. • Chemistry tutor
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If we have 10 grams of Helium at a concentration of 10 mol dm-3, what volume of helium do we get.

First we need to identify that 2 equations will be in use here. 1st - moles = mass/Mr and 2nd - volume = moles/concentration This is because we need to find the volume and the only other information we have ...
HH
Answered by Hamaad H. • Chemistry tutor
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