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∙ 8y agoCu + 2NaOH ---> Cu(OH)2 + 2NaSince we have a finite amount of two reactants we must first determine which is the limiting reactant.
For Cu: n= m/M = 0.500 g/63.53 g/mol = 7.87E-3 mol
For NaOH: n = CV = (3.0 mol/L)(0.0300 L) = 9.00E-2 mol
Copper is by far the limiting reactant therefore we will use its amount to find the maximum Cu(OH)2 that can be yielded from the reaction. Since the above reaction scheme indicates that Cu and Cu(OH)2 are in a 1 to 1 ratio, their molar amounts are the same ie. at the end of the reaction there will be 7.87E-3 mol of Cu(OH)2
To find the mass that corresponds to this molar amount we multiply by the molar mass of Cu(OH)2 (97.56 g/mol):
m=nM = (7.87E-3 mol)(97.56 g/mol) = 0.7678 g
Therefore 0.500 g of Cu will yield 0.768 g (3 sig fig) of Cu(OH)2.
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∙ 8y agoWiki User
∙ 9y agoCopper (as a metal) doesn't react with sodium hydroxide.
3
CuOH is not the formula of copper hydroxide, it is Cu(OH)2, where the 2 should be a subscript. It is a blue gelatinous solid formed when hydroxide ions are added to solutions of copper salts. It is insoluble, but decomposes in air to copper oxide and water.
Not.
CuOH2
copper, oxygen and hydrogen
3
Um, I don't know about the other compounds, but ZnS is insoluble.
The balanced symbol equation for the reaction of copper (II) carbonate and nitric acid is: CuCO3(s) + 2HNO3(aq) → Cu(NO3)2(aq) + H2O(l) + CO2(g)
Yes, Cu(OH)2 is considered a weak base. It partially dissociates in water to form hydroxide ions, which can accept protons and decrease the acidity of a solution, but it does not fully dissociate like strong bases such as NaOH.
I'm sorry about the lack of readability in this question - Wiki Answers eliminated all the punctuation (parenthesis) necessary for the problem - maybe a better question to post would be "Why does Wiki Answers find it necessary to eliminate punctuation when it's part of a question?" This flaw is a detriment to the usability of the site - other answer sites don't have punctuation regulated so severely.
Cu(OH)2 is an ionic compound. It consists of a metal cation (Cu2+) and a polyatomic anion (OH-), which forms an ionic bond through the transfer of electrons.
CuOH is not the formula of copper hydroxide, it is Cu(OH)2, where the 2 should be a subscript. It is a blue gelatinous solid formed when hydroxide ions are added to solutions of copper salts. It is insoluble, but decomposes in air to copper oxide and water.