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3 years ago

What is the conjugate acid of HCO3- ?OH-H2CO3CO32-H2OH3O+

Chemistry

1 answer:

adell [148]3 years ago

5 0

Answer: The conjugate acid of $HCO_3^-$ is $H_2CO_3$

Explanation:

According to the Bronsted-Lowry conjugate acid-base theory:

An acid is defined as a substance which looses donates protons and thus forming conjugate base.
A base is defined as a substance which accepts protons and thus forming conjugate acid.

To form a conjugate acid of $HCO_3^-$ , this compound will accept one proton to form $H_2CO_3$

The chemical equation for the formation of conjugate acid follows:

$HCO_3^-+H^+\rightarrow H_2CO_3$

The conjugate acid formed is named as carbonic acid.

Hence, the conjugate acid of $HCO_3^-$ is $H_2CO_3$

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Question 3 (Molarity)

antiseptic1488 [7]

Answer:

The molarity of the solution is 1,03 M.

Explanation:

Molarity is a concentration measure that expresses the moles of solute (in this case HBR) in 1 liter of solution (1000ml). First we calculate the mass of 1 mol of HBr, to calculate the moles that are in 50 g of said compound:

Weight 1 mol HBr= Weight H + Weight Br= 1,01g + 79,90g= 80, 91 g/mol

80,91 g ----1 mol HBr

50,0 g------x= (50,0 g x1 mol HBr)/80,91 g= 0,62 mol HBr

600 ml solution-----0,62 mol HBr

1000ml solution------x= (1000ml solution x 0,62 mol HBr)/600 ml solution

x=1,03 moles HBr ---> The solution is 1,03M

8 0

3 years ago

Which statement describes both homogeneous mixtures and heterogeneous mixtures?

stiks02 [169]

Answer:

both are the types of mixture and both are impure substances that donot have fixed composition and the composition of constituents is not uniform

5 0

2 years ago

How many capsules containing 75mg of Tamiflu could be produced from 155g of star anise.?

jeyben [28]

From the question you will find that:
one capsule of tamiflu is obtained from 2.6 g of star anise.
1 capsule = 2.6 g tamiflu
? capsules = 155 g tamiflu
by cross multiplication = $\frac{(1 x 155)}{2.6}$ = 59 capsules

7 0

3 years ago

Can someone help me with this

Feliz [49]

Answer:

phosphorous- 5

calcium- 2

nitrogen- 3 or 5

iron- 8 (transition metals use subshells as valence electrons)

argon- 8

potassium- 1

helium- 2

magnesium- 2

sulfur- 6

lithium- 1

iodine- 7

oxygen- 6

barium- 2

aluminum- 3

hydrogen- 1

xenon- 8

copper- 1

Source: my own chemistry notes

3 0

2 years ago

7.20g of potassium sulfate reacts with the excess oxygen gas in a single displacement reaction, how many grams of oxygen are con

skad [1K]

The balanced chemical reaction:

K2SO4 + O2 = 2KO2 + SO2

Assuming that the reaction is complete, all of the potassium sulfate is consumed. We relate the substances using the chemical reaction. We calculate as follows:

7.20 g K2SO4 ( 1 mol / 174.26 g) ( 1 mol O2 / 1 mol K2SO4 ) ( 32 g / 1 mol ) = 1.32 g O2 consumed in the reaction.

5 0

2 years ago