Question

What is the concentration of hydrogen ions in solution when 0.30 mol of nitric acid are dissolved in enough water to make 500.0 mL of solution?

A. 0.60 M
B. 0.15 M
C. 0.30 M
D. 1.2 M

Answer 1

@Cuanchi

Answer 2

@Australopithecus

Answer 3

what is your answer and how did you calculate it?

Answer 4

Nitric acid is a strong acid so it fully dissociates into Nitrate and Hydrogen

i.e.

HNO3 -> H+ + -NO3

Secondly you need to use the formula:


Molarity = Moles/Liters

Answer 5

to find the molarity of hydrogen

Answer 6

Do you follow?

Answer 7

So the molarity of hydrogen is 0.0006?

Answer 8

NO, the volume has to be in L you have to convert the mL to L

Answer 9

1L = 1000mL

Answer 10

so to convert:

multiply 500mL by (1L/1000mL) note when you multiply mL cancels out and you are left with just liters

Answer 11

This works for almost all units

Answer 12

Unit conversion is important to know

Answer 13

There are tons of youtube videos on the topic

Answer 14

it works the same as exponent division

Answer 15

Show me your math

Answer 16

0.60 because

Molarity = moles of solute/Liters of solution (500.0 mL = 0.5 Liters)

M = 0.30 moles HNO3/0.5 L

= 0.60 M H + ions in solution

Answer 17

The concentration of the nitric acid solution is 0.60 M, and the nitric acid will dissociate completely to H+ (aq) and NO3- (aq). This means the hydrogen ion concentration is equal to the starting concentration of the acid.

Answer 18

Yup