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How could a sample of gas be collected at the anode during-electrolysis of copper sulfate?
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How could a sample gas be collected at the positive electrode when using electrolysis for copper?
Place an inverted test tube over the elctrode
A sample collected by drilling into Earth's surface with a hollow drill and pulling out a column of soil and rocks?
a core sample
In the laboratory a student named Georgia weighed 5.35 grams of an unknown solid mixture containing benzoic acid copper II sulfate and sand she added 15 ml of acetone to her sample which dissolved?
benzoic acid
What would you expect to observe if a sample of ammonia gas collected were bubbled into aqueous copper ii sulphate until no further change took place?
The solution would become a deep blue color as the ammonia forms coordinate covalent bonds to the copper II cations.
How many moles of ammonium sulfate are in 150g sample?
150/132 equals 1.136moles
How can you get copper sulphate from an impure sample?
1. Dissolve the copper carbonate/sulfate salts in water and filter it: the Copper Carbonate is insoluble so it will remain as the residue on the filter paper, and the copper sulfate is soluble so it will pass through the paper as the filtrate. 2. Heat the filtrate in an evaporating basin till the point of crystallization (crystals will form on a rod dipped into the mixture, at the point of crystallization). 3. Leave the filtrate to cool and crystals of pure Copper sulfate will form. Collect the crystals with a spatula and leave them on a sheet of filter paper to dry.
How could a sample gas be collected at the positive electrode when using electrolysis for copper?
Place an inverted test tube over the elctrode
What is the percent recovery of the sample if a student dissovles 1.00 g of a mixture of salicylic acid and copper sulfate and recovers 0.49 g and 0.28 g respectively?
2
How does Copper Sulfate react to carbon steel?
Copper sulphate solution testA simple 5 percent copper sulphate solution, applied in the same way as the water drop test, should confirm the differences between non-stainless steels and stainless steels. A metallic copper coloured deposit should form easily on non-stainless steels, but the solution should remain free of copper colour if the sample is a stainless steel.
Sample of a substance containing copper?
copper oxide...
What is a Random sample poll?
A random sample is a sample that is collected without any specific characteristics in mind. For instance, instead of collecting a sample of women or members of a particular age group, they are collected randomly off the streets.
Can you please give examples of chemistry investigatory project I need it for my project in chemistry?
Prepare a sample of tetraamine copper (II) sulfate. (Despite the name it's very easy to produce). Analyze the percent by mass of copper ion, sulfate and ammonia in your compound. Very easy and impressive experiment if you have access to some standard lab equipment. Copper is analyzed by titration, sulfate is precipitated out with barium (II) chloride and measured using simple stoichiometry, ammonia is analyzed by back titration. Feel free to message me if you have any questions.
Is the data is sample or population?
Data is neither sample nor population. Data are collected for attributes. These can be for a sample or a population.
What substance found in a soil sample collected in an arid region would most likely be absent in a soil sample collected in a humid region?
rock salt
Why does a statistical sample have to be large?
The larger the sample of data collected leads to a more accurate conclusion.
How would you test the presence of sulfate ions?
To identify the presence of sulfate ions in a solution, follow these steps: To acidify the sample, add a few drops of dilute hydrochloric acid (HCl) to the sample. Then, add a few drops of dilute barium chloride (BaCl2) solution to the sample. If sulfate ions are present in the solution, a white precipitate of barium sulfate (BaSO4) will form. The reaction is: Ba²⁺ (aq) + SO4²⁻ (aq) → BaSO4 (s) For example, if we have a solution of magnesium sulfate (MgSO4), the reaction would be: BaCl2 (aq) + MgSO4 (aq) → BaSO4 (s) + MgCl2 (aq) By observing the formation of the white precipitate, we can confirm the presence of sulfate ions in the sample.
How to Purify Copper by Plating?
The process of plating copper is relatively simple with the right materials and know-how. This tutorial will cover a basic copper plating procedure which is used on a large industrial scale to achieve high-purity copper.There are several materials needed for this process. The first and most obvious is the impure copper to be refined. Also needed will be copper II sulfate, water, a DC power source, and some lengths of wire.The first step is to make a saturated solution of copper II sulfate, which has a maximum solubility of 316g per liter of water. The final solution should be dark blue.Two copper electrodes are then introduced into the copper sulfate bath. One of these electrodes consists of the impure copper sample and the other is simply a copper wire.The DC power source is applied to the two electrodes. The positive side (anode) of the supply is connected to the impure copper block while the negative side (cathode) is attached to the copper wire.Copper has only positive oxidation states and is therefore attracted to the negative electrode. Pure copper is pulled from the solution of copper sulfate and attaches itself to the wire electrode, breaking the sulfate anion off and creating a weak solution of sulfuric acid. The acid then eats at the impure copper, turning it into more copper sulfate. Effectively, the copper from the impure anode is transferred to the cathode, leaving all its impurities behind. The copper plated onto the cathode will be very pure.Cell current should be monitored carefully as high current causes hydrogen bubbles to form on the cathode and will inhibit the growth of the pure copper. If the power supply does not have a current limiting adjustment, the spacing between the anode and cathode can be varied to regulate the current. The closer the electrodes, the higher the current flow and vice versa.Never dispose of the used copper sulfate down the drain as it is an environmental hazard. Simply evaporate the solution to recover the copper sulfate for later use.
