Chemistry: An Atoms-Focused Approach
14th Edition
ISBN: 9780393600681
Author: Gilbert
Publisher: W. W. Norton & Company
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Dimethyl oxalate, an important pharmaceutical chemical, can be prepared by reacting oxalic acid with methanol. The balanced reaction is shown using line structure representations of the molecules.
Chemical formula:
C2H2O4C2H2O4
CH4OCH4O
C4H6O4C4H6O4
H2OH2O
Name:
oxalic acid
methanol
dimethyl oxalate
water
Molar mass:
90.04 g/mol
32.04 g/mol
118.1 g/mol
18.02 g/mol
If 91.0 g of oxalic acid and 79.0 g of methanol react to form 89.0 g of dimethyl oxalate, what is the percent yield?
In the wintertime, it is common to sprinkle a salt, such as NaCl or MgCl2, on icy roads and driveways. What is the purpose of this? What is an advantage of using an ionic compound like NaCl vs. a molecular compound like sugar?
Consider the nickel salt: (NH4 )2Ni(SO4 )2 ·y H2O (Ammonium Nickel Sulfate Hydrate), where y is the number of coordinated waters. The actual yield of product was 9.640 g - obviously containing coordinated water. The product was then heated strongly until all the water had been driven off. The resulting anhydrous salt had mass 7.000 g. What is the value of y?
Chapter 4 Solutions
Chemistry: An Atoms-Focused Approach
Ch. 4 - Prob. 4.3VPCh. 4 - Prob. 4.4VPCh. 4 - Prob. 4.8VPCh. 4 - Prob. 4.9VPCh. 4 - Prob. 4.10VPCh. 4 - Prob. 4.11VPCh. 4 - Prob. 4.12VPCh. 4 - Prob. 4.13QACh. 4 - Prob. 4.14QACh. 4 - Prob. 4.15QA
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- Write the empirical formula of the compound formed by (a) Al3+ and Cl - ions, (b) Al 3+ and O2 - ions, (c) Mg2+ and NO3 ions.arrow_forwardA 15.152-gram sample of a hydrate was heated to drive off the water, leaving Al(NO3)3 (s) with a mass of 8.603 grams. Calculate the value of in Al(NO3)3•nH2O (s).arrow_forwardThere are two steps in the usual industrial preparation of acrylic acid, the immediate precursor of several useful plastics. In the first step, calcium carbide and water react to form acetylene and calcium hydroxide: CaC,(s)+2H,O(9)→C,H,(9)+Ca(OH);(s) In the second step, acetylene, carbon dioxide and water react to form acrylic acid: 6C,H,(9)+3 CO,(9)+4H;O(9)→5CH,CHCO,H(9) Write the net chemical equation for the production of acrylic acid from calcium carbide, water and carbon dioxide. Be sure your equation is balanced. O-0 Torme of Le Check 02021 McGraw Hill LLC A ights Reser Explanation Addressarrow_forward
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