Question

If 0.465 L of HCl(*g*) at STP (STP is 0°C, 1 atm.
pressure) is dissolved in enough water to give a total volume of
4.50 L, what is the pOH of the resulting HCl*(aq)*
solution?

A) 12.317 B) 7.000 C) 1.683 D) 11.664 E) 2.336

Answer #1

Part A:
0.65 g of hydrogen chloride (HCl) is dissolved in water to make
8.0 L of solution. What is the pH of the resulting
hydrochloric acid solution?
Part B:
0.20 g of sodium hydroxide (NaOH) pellets are dissolved in water
to make 3.0 L of solution. What is the pH of this solution?

Part A
0.75 g of hydrogen chloride (HCl) is dissolved in water to make
7.0 L of solution. What is the pH of the resulting
hydrochloric acid solution?
Express the pH numerically to two decimal places.
pH =
Part B
0.25 g of sodium hydroxide (NaOH) pellets are dissolved in water
to make 8.0 L of solution. What is the pH of this solution?
Express the pH numerically to two decimal places.
pH =

PART A: 0.10 g of hydrogen chloride (HCl ) is dissolved in water
to make 8.0 L of solution. What is the pH of the resulting
hydrochloric acid solution?
PART B: 0.60 g of sodium hydroxide (NaOH ) pellets are dissolved
in water to make 2.0 L of solution. What is the pH of this
solution?
PART C: Calculate the concentration of H+ ions in a 0.010
M aqueous solution of sulfuric acid.
PART D: A certain weak acid, HA...

What is the pOH of a solution prepared by dissolving 0.835 g of
KOH(s) in 7.70 L of water?
A.2.714
B.1.827
C.7.000
D.11.286
E.12.173

What is the pOH of a solution prepared by dissolving 0.814 g of
KOH(s) in 7.70 L of water?
A.7.000
B.1.838
C.12.162
D.2.725
E.11.275

A steel cylinder with a volume of 15.0 L is filled with 69.4 g
of nitrogen gas at 25∘C.
Part A
What is the pressure, in atmospheres, of the N2 gas in the
cylinder?
Express your answer to three significant figures with the
appropriate units.
-------------------------------------------------------------------------------------------------------------------------------
Part B
How many liters of H2 gas can be produced at 0 ∘C and 1.00 atm
(STP) from 44.5 g of Zn?
Zn(s)+2HCl(aq)→ZnCl2(aq)+H2(g)
Express your answer with the appropriate units.
----------------------------------------------------------------------------------------------------------------------------------------------------------------------
A gas...

Mg metal reacts with HCl to produce hydrogen gas.
Mg(s)+2HCl(aq)→MgCl2(aq)+H2(g)
What volume of hydrogen at 0 ∘C and 1.00 atm (STP) is released
when 8.80 g of Mg reacts?
Express your answer with the appropriate units.
How many grams of magnesium are needed to prepare 5.75 L of H2
at 745 mmHg and 16 ∘C?
Express your answer with the appropriate units.

1) At standard temperature and pressure (0 ∘C and 1.00 atm ),
1.00 mol of an ideal gas occupies a volume of 22.4 L. What volume
would the same amount of gas occupy at the same pressure and 45 ∘C
?
Express your answer with the appropriate units.
2) One mole of an ideal gas is sealed in a 22.4-L container at a
pressure of 1 atm and a temperature of 273 K. The temperature is
then increased to 304...

The osmotic pressure of blood is 7.65 atm at 37°C. If you were
preparing an isotonic saline solution by dissolving sodium chloride
in water, how many grams of sodium chloride would you dissolve in 1
L of water? (Answer is NOT 0.150 or 17.6) A. 0.150 g B. 0.301 g C.
1.22 g D. 8.78 g E.17.6 g

In water at 68°F at sea level (1 atm), water contains about 42
mg/L of dissolved oxygen. Determine the value of Henry's law
constant for oxygen dissolving in water. Recall that air is 21%
oxygen.
A)
6.3 ´ 10–3 mol/(L atm)
B)
0.010 mol/(L atm)
C)
0.25 mol/(L atm)
D)
1.9 ´ 10–2 mol/(L atm)
E)
1.3 ´ 10–3 mol/(L atm)

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