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Chemistry
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Lead (IV) oxide reacts with concentrated hydrochloric acid as follows: PbO2(s) + 4HCl(aq) -----> PbCl2(s) + Cl2(g) + 2H2O(l) What mass of lead chloride would be obtained from 37.2g of PbO2, and what mass of chlorine gas would be produced

In this question we have to use the equation Moles= Mass(g)/ Mr. We have the mass of PbO2 so to find the moles we need to divide the mass, which is 37.2g, by Its Mr, which is 207.2 + (162) = 239.2. th...

AA
Answered by Aisha A. Chemistry tutor
27724 Views

How can a student test for the prescence of a halide ion?

Add a drop of each liquid to individual test tubes.To each test tube, add dilute nitric acid and silver nitrate solution.A precipitate will form for each ion present.chloride= whitebromide= creamiodide= y...

MP
Answered by Marco P. Chemistry tutor
2241 Views

Describe the changes in equilibrium of ethanol production from ethene and water (enthalpy of reaction is ∆H = - 46 kJ/mol) when: (a) a high pressure is applied; (b) ethanol concentration is increased; (c) temperature is increased; (d) a catalyst is used.

The equation for the reaction (would be given for this type of question but I ran out of space): C2H4 (g) + H2O (g) ⇌ C2H5OH (g) ∆H = - 46 kJ/molQues...

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Answered by Aiste A. Chemistry tutor
7227 Views

Using principles of structure and bonding, explain why sulfur has a higher melting point than phosphorus

Sulfur, which is naturally S8 has more electrons than Phosphorus, which is naturally P4. Therefore the Van der Waals between molecules is stronger in Sulfur than it is in Phosphorus,...

DS
Answered by Dalvin S. Chemistry tutor
26347 Views

What is an ionic bond?

An ionic bond is the electrostatic force of attraction between two or more oppositely charged ions, formed by the transfer of electrons...

GS
Answered by Gunchit S. Chemistry tutor
2126 Views

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