# Math

posted by .

1. Write the balanced chemical equation for the reaction
NaOH + HCI --> NaCI + H20

2. Extract the relevant information from the qustion:
NaOH v= 30mL, M=0.10 HCI v= 25.0 mL, M=?

3. Convert to Liters
NaOH v= 0.03 L, M= 0.10M HCI v=0.025L, M=?

4. Calculate moles NaOh:
n(NaOH) = M x V = 0.10 moles/L x 0.03L = 3x10^-3 moles

5. From the balanced chemical equation find the mole ratio
NaOH:HCI = 1:1

6. Find the number of moles of HCI that were titrated
NaOH: HCI is 1:1;
so n(NaOH) = n(HCI) = 0.003 moles at neutralization

7. Calculate the concentration of HCI:
M=n divided by V n=0.003 mol, V=0.025L

• Actually inorganic chemistry -

I will take a look but am no chemist.

• Math -

NaOH + HCI --> NaCI + H20
Na balanced
O balanced
H balanced, 2 each side
Cl balanced
So it is balanced as is.

• Math -

NaOH v= 30mL, M=0.10 HCI v= 25.0 mL, M=?

You need exactly the same number of moles (or molecules) of NaOH as of HCl
.1 * 30 = M * 25
M of HCl = .1 (30/25) = .12

• Math -

3. Convert to Liters
NaOH v= 0.03 L, M= 0.10M HCI v=0.025L, M=?

The same answer as #2

• Math -

I agree with 4 through 7

## Similar Questions

1. ### Chemistry

In a lab that I am doing I am having difficulty in determining this: What are two indications that suggest a reaction has taken place when HCI was added to Mg?
2. ### chemistry

acid: HCI 0.10 M Base:NaOH O.050 M 3 ml of HCI was used. Calculate the volume of base required to reach the equivalence point of this titration. Somewhere in the finding the solution, i have to use the fact that Moles HCl = moles NaOH. …
3. ### chemistry

im stuck on finding the molarity of a substance and its due tomarrow. someone please help. 5 moles of HCI in two liters. 2 moles of NaOH in 1 liter. 0.5 moles of HCI in one liter. 36 grams of HCI in one liter. thanx, alex
4. ### chemistry

three student chemists measured 50.0 mL of 1.00 M NaOH in separate Styrofoam "coffee cup" calorimeters ( Part B). Brett added 50.0 mL of 1.10 M HCI to his solution of NaOH; Dale added 45.5 mL of 1.10 m HCL 9 eqaul moles) to his NaOH …
5. ### Chemistry

Sodium carbonate reacts with hydrochloric acid as shown in an unbalanced chemical equation. What mass of Co2 is produced from the reaction of 2.94g Na2 Co2 with excess HCI?
6. ### chemistry

a 25.0ml dsmplr og 0.105M HCI was titrated with 31.5ml of NaOH. What is the concentration of the NaOH I got 0.0834M am I correct HCI + NaOH -----> H20 + NaCl 25.0ml HCI x 1L/1000mlx0.105 mol HCI/1L HCI X 1 mol NaOH/ I mol HCI = …
7. ### Chemistry

If it takes 54 mL of 0.1 M NaOH to neutralize 125 mL of an HCI solution, what is the concentration of the HCI?
8. ### chemistry

530 mL solution 10% HCl has been spilt onto the bench. It cannot be diluted or washed away. How much of the granular NaOH from the container seen in a must be used to neutralise the acid?
9. ### chemistry

What mass of sodium hydroxide pellets must be poured into a waste drum containing 20.0 L o 3.0 mol/L sulphuric acid to completely neutralize the waste acid solution?
10. ### Chemistry

Write balanced reaction for the following metal acid reaction A) Mg and HCI B) Zn and HCI

More Similar Questions