Platinum metal reacts as follows in "aqua regia" (mixture of nitric acid and hydrochloric acid): ...
Question:
Platinum metal reacts as follows in "aqua regia" (mixture of nitric acid and hydrochloric acid):
3Pt(s) + 4HNO_3(aq) + 18HCl(aq) --> 3H_2PtCl_6(aq) + 4NO(g) + 8H2_O(l)
If you have 12.0g platinum, 60ml of 5.00M HCl and 7.00ml of 10.0M HNO_3, calculate the mass in gram of chloroplatinic acid, H_2PtCl_6, that can be produced. Assume 100% yield.
Molarity:
The molarity (or molar concentration) of a solution is defined as the number of moles of solute (n) divided by the solution volume (in L).
{eq}M=\dfrac{n}{V} {/eq}
The number of moles of solute can be written as the mass of the solute in the solution (w) divided by the molar mass of solute (m). Thus, the molarity can be written as:
{eq}M=\dfrac{w}{mV} {/eq}
Answer and Explanation: 1
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View this answerThe atomic mass of platinum = 195 g/mol
The number of moles of Pt in 12.0 g of it:
{eq}n_{Pt}=\dfrac{12g}{195g/mol}=0.06mol {/eq}
The number of...
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Limiting Reactants & Calculating Excess Reactants
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Chapter 9 / Lesson 5
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Learn how to find the limiting and excess reactants in a chemical reaction. See example problems that calculate the limiting and excess reactants.
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