Solutions of hydrogen in palladium may be formed by exposing Pd metal to H2 gas. The...

Solutions of hydrogen in palladium may be formed by exposing Pd metal to H2 gas. The concentration of hydrogen in the palladium depends on the pressure of H2 gas applied, but in a more complex fashion than can be described by Henry's law. Under certain conditions, 0.95 g of hydrogen gas is dissolved in 214 g of palladium metal. (The density of the resulting solution is 11.6 g/cm3.)

Determine the molarity of this solution.

Determine the molality of this solution.

Determine the percent by mass of hydrogen in this solution.

Expert Solution

mass of H2 = 0.95 g

mass of Pd metal = 214 g

total mass = 0.95 + 214 = 214.95 g

density of solution = 11.6 g / mL

volume of solution = mass / density

= 214.95 / 11.6

= 18.53 mL

Moles of H2 = 0.95 / 2 = 0.475

Molarity = moles / volume = 0.475 / 0.01853

Molarity = 25.6 M

Molality = moles / mass of solvent in kg

= 0.475 / 0.214

Molality = 2.22 m

mass % = ( 0.95 / 214.95 ) x 100

mass % = 0.44 %

queen_honey_blossom answered 2 years ago

Chromium (III) oxide may be reduced by mixing with hydrogen gas. The products formed are solid...

Chromium (III) oxide may be reduced by mixing with hydrogen gas. The products formed are solid chromium and water. What mass of solid chromium in pounds can be prepared from one ton of chromium (III) oxide?

Hydrogen gas, H2, reacts with nitrogen gas, N2, to form ammonia gas, NH3, according to the...

Hydrogen gas, H2, reacts with nitrogen gas, N2, to form ammonia gas, NH3, according to the equation 3H2(g)+N2(g)→2NH3(g) Part B How many grams of NH3 can be produced from 2.15 mol of N2 and excess H2. Part C How many grams of H2 are needed to produce 13.02 g of NH3? Part D How many molecules (not moles) of NH3 are produced from 4.83×10−4 g of H2? Express your answer numerically as the number of molecules.

Hydrogen gas, H2, reacts with nitrogen gas, N2, to form ammonia gas, NH3, according to the...

Hydrogen gas, H2, reacts with nitrogen gas, N2, to form ammonia gas, NH3, according to the equation 3H2(g)+N2(g)→2NH3 How many grams of H2 are needed to produce 10.70 g of NH3? How many molecules (not moles) of NH3 are produced from 3.21×10−4 g of H2?

Hydrogen gas, H2, reacts with nitrogen gas, N2, to form ammonia gas, NH3, according to the...

Hydrogen gas, H2, reacts with nitrogen gas, N2, to form ammonia gas, NH3, according to the equation 3H2(g)+N2(g)→2NH3 How many grams of H2 are needed to produce 10.70 g of NH3? How many molecules (not moles) of NH3 are produced from 3.21×10−4 g of H2?

Hydrogen gas, H2, reacts with nitrogen gas, N2, to form ammonia gas, NH3, according to the...

Hydrogen gas, H2, reacts with nitrogen gas, N2, to form ammonia gas, NH3, according to the equation 3H2(g)+N2(g)→2NH3(g) 1a. How many grams of NH3 can be produced from 2.60 mol of N2 and excess H2 1b. How many grams of H2 are needed to produce 11.32 g of NH3? 1c. How many molecules (not moles) of NH3 are produced from 4.06×10−4 g of H2?

Hydrogen gas, H2, reacts with nitrogen gas, N2, to form ammonia gas, NH3, according to the...

Hydrogen gas, H2, reacts with nitrogen gas, N2, to form ammonia gas, NH3, according to the equation 3H2(g)+N2(g)→2NH3(g) a. How many grams of H2 are needed to produce 11.70 g of NH3? b. How many molecules (not moles) of NH3 are produced from 4.42×10−4 g of H2?

Mg metal reacts with HCl to produce hydrogen gas. Mg(s)+2HCl(aq)→MgCl2(aq)+H2(g)......A)What volume of hydrogen at 0 ∘C...

Mg metal reacts with HCl to produce hydrogen gas. Mg(s)+2HCl(aq)→MgCl2(aq)+H2(g)......A)What volume of hydrogen at 0 ∘C and 1.00 atm (STP) is released when 9.25 g of Mg reacts B)How many grams of magnesium are needed to prepare 3.90 L of H2 at 730 mmHg and 20 ∘C

A sample of Hydrogen gas, H2, has a volume of 8.56 L at a temperature of...

A sample of Hydrogen gas, H2, has a volume of 8.56 L at a temperature of 0oC and a pressure of 1.5atm. Calculate the number of moles of hydrogen gas in this sample. Question 5Our next lab involves determining the partial pressure of an evolved gas in the process of a chemical reaction. If the atmospheric pressure is found to be 75.4 cm Hg, and the partial pressure of water is known to be (found in a reference table) 21...

a) How many grams of hydrogen gas (H2) is produced by the decomposition of 43.7g of...

a) How many grams of hydrogen gas (H2) is produced by the decomposition of 43.7g of ammonia gas (NH3)? b) If 12.0 moles of H2 were produced, how many grams of NH3 was decomposed? c) If 12.0 moles of H2 were produced, how many moles of N2 were produced?

Hydrogen gas reacts with nitrogen gas to form ammonia according to the reaction below. H2 (g)...

Hydrogen gas reacts with nitrogen gas to form ammonia according to the reaction below. H2 (g) + N2 (g) → NH3 (g) a. How many moles of NH3 are produced for every 1 mole of H2? Classify this reaction. b. Suppose 12.2 g of H2 (g) reacts with 48.4 g of N2 (g). Identify the limiting reactant. What is the theoretical yield of the ammonia product in grams ? Show your work. c. What mass (in grams) of the excess...

Question

Solutions of hydrogen in palladium may be formed by exposing Pd metal to H2 gas. The...

Solutions

Expert Solution

Related Solutions