Question

The temperature for each solution is carried out at approximately 297 K where Kw=1.00×10−14.

0.25 g of hydrogen chloride (HCl) is dissolved in water to make 4.5 L of solution. What is the pH of the resulting hydrochloric acid solution?

0.55 g of sodium hydroxide (NaOH) pellets are dissolved in water to make 6.5 L of solution. What is the pH of this solution?

Answer #1

#

molar mass of HCl = 36.46094 gm/mole then 0.25 gm of HCl = 0.25 / 36.46094 = 0.0068567 mole

molarity = no. of mole / volume of solution in liter

molarity of HCl = 0.0068567 / 4.5 = 0.0015237 M

HCl is strong acid dissociate completly therefore [HCl] =
[H^{+}] = 0.0015237 M

pH = -log[H^{+}] = -log(0.0015237) = 2.82

#

molar mass of NaOH = 39.997 gm/mole then 0.55 gm of NaOH = 0.55 / 39.997 = 0.01375 mole

molarity = no. of mole / volume of solution in liter

molarity of NaOH = 0.01375 / 6.5 = 0.0021155 M

NaOH is strong base dissociate completly therefore [NaOH] =
[OH^{-}] = 0.0021155 M

pOH = -log[OH^{-}] = -log(0.0021155) = 2.67

pH = 14 - pOH = 14 - 2.67 = 11.33

The temperature for each solution is carried out at
approximately 297 K where Kw=1.00×10−14
Part A
0.25 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
0.90 g of sodium hydroxide (NaOH) pellets are dissolved in water
to make 6.5 L of solution. What is the pH of this solution?
Express the pH numerically to two decimal places
part C
What is the...

The temperature for each solution is carried out at
approximately 297 K where Kw=1.00×10−14.
Part A 0.80 g of hydrogen chloride (HCl) is
dissolved in water to make 2.5 L of solution. What is the pH of the
resulting hydrochloric acid solution?
Part B 0.10 g of
sodium hydroxide (NaOH) pellets are dissolved in water to make 4.0
L of solution. What is the pH of this solution?

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 =

0.60g of hydrogen chloride (HCl) is dissolved in water to make
8.0L of solution. What is the pH of the resulting
hydrochloric acid solution?
0.90g of sodium hydroxide (NaOH) pellets are dissolved in water
to make 4.0L of solution. What is the pH of this solution?

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...

0.50 g of sodium hydroxide (NaOH) pellets are dissolved in water
to make 6.0 L of solution. What is the pH of this solution?
Express the pH numerically to two decimal
places.

Answer the following Qs:
1)The chemical reaction that represents a dehydration reaction
is:
a)
Heating hydrated barium chloride
b)
Heating anhydrous barium chloride
c)
Adding water to anhydrous barium chloride
d)
Adding water to hydrated barium chloride
2)Suppose 0.22 L of 0.5 mol/L NaOH solution was titrated with 5
L of HCl using phenolphthalein indicator. Calculate the amount of
the base and the acid that were used to reach the neutralization
point.
a)
0.55 mol of the base and 0.55...

When 2.0 g of sodium perchlorate (NaClO4) are mixed with 100 mL
of a 0.5-M solution of hydrochloric acid (HCl), sodium hydroxide
(NaOH) and chlorine gas (Cl2) are produced according to the
following reaction (Hint: don’t forget to balance it!):
NaClO4(s) + HCl(aq) Na+(aq) +
OH-(aq) + Cl2(g)
1) How many moles of Chlorine gas will be produced?
A) 0.090 mol B) 0.045mol C) 0.25 mol D) 0.031mol E) none of the
above
2) If this chlorine gas is...

1.) You will work with 0.10 M acetic acid and 17 M acetic acid
in this experiment. What is the relationship between concentration
and ionization? Explain the reason for this relationship
2.) Explain hydrolysis, i.e, what types of molecules undergo
hydrolysis (be specific) and show equations for reactions of acid,
base, and salt hydrolysis not used as examples in the introduction
to this experiment
3.) In Part C: Hydrolysis of Salts, you will calibrate the pH
probe prior to testing...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 13 minutes ago

asked 15 minutes ago

asked 16 minutes ago

asked 16 minutes ago

asked 20 minutes ago

asked 20 minutes ago

asked 30 minutes ago

asked 39 minutes ago

asked 52 minutes ago

asked 58 minutes ago

asked 59 minutes ago

asked 1 hour ago