1. A student prepares a 250.0 mL solution using 41.7 grams of potassium nitrite. They then...

60.1K

Verified Solution

Question

Chemistry

1. A student prepares a 250.0 mL solution using 41.7 grams ofpotassium nitrite. They then take 29.9 mL of this solution anddilute it to a final volume of 250.0 mL. How many grams ofpotassium nitrite are in a 36.2 mL sample of this final dilutedsolution?
2.
If you wanted to make a 4.50 M solution of aluminum nitrateusing a 400.00 mL volumetric flask, how many grams of this saltwould you need to use?
3.
H₂SO₄ +2KOHÂ Â â†’Â Â 2H₂O +K₂SO₄
How many mL of a 1.75 M solutionof potassium hydroxide are required to titrate 15.72 mL of a 2.13 Msolution of sulfuric acid?

Answer & Explanation Solved by verified expert

4.3 Ratings (811 Votes)

Answer 1 We are given mass of KNO2 417 g volume 2500 mL First we need to calculate the moles of KNO2 Moles of KNO2 417 g 85104 gmol1 0490 moles So initial concentration of KNO2 0490 moles 0250 L 196 M So M1 196 M V1 299 mL V2 2500 mL M2 By dilution See Answer

Get Answers to Unlimited Questions

Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!

Membership Benefits:

Unlimited Question Access with detailed Answers
Zin AI - 3 Million Words
10 Dall-E 3 Images
20 Plot Generations
Conversation with Dialogue Memory
No Ads, Ever!
Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!

Become a Member