How quickly will I receive my key after purchase?

Most keys are delivered instantly by sellers after payment confirmation. You will receive the key by email or directly on the website.

Can I return or exchange a key if it doesn’t work?

Usually yes, key sellers provide a guarantee on all keys. In case of activation issues, contact the seller’s chat for assistance.

Are keys supported for different platforms — Steam, Xbox, PlayStation, and others?

Yes, on Irongamers you will find keys and accounts for most popular platforms, including Steam, EA Play, Uplay, Xbox, Twitch, and Epic Games.

Can I get discounts and bonuses for referrals?

Usually yes, sellers can give personal discounts on new games and keys.

What payment methods are available?

We support various payment methods: bank cards, e-wallets, SBP, and other convenient options.

How is security and confidentiality ensured when buying?

The purchasing process takes place on a special page that uses modern data protection methods, encryption, and guarantees full confidentiality of your payment and personal data.

114. Solving a chemistry problem

All 114 offers

Content: 6.rar (48.34 KB)
Uploaded: 14.08.2022

Positive responses: 0
Negative responses: 0

Sold: 1
Refunds: 0

Seller: Derkach

Ask a question

Description

6. The analyzed solution of methylamine CH3NH2 with a volume of 20.0 ml was diluted in a volumetric flask to 100.0 ml. Construct potentiometric titration curves in the coordinates pH-V and ΔpH / ΔV - V and determine the concentration of methylamine (mol / l), if the following results were obtained when titrating 20.0 ml of the prepared solution of 0.2000 N HCl:
V(HCl), ml 10.0 12.0 14.0 14.5 14.9 15.0 15.1 15.5 16.0
pH 10.42 10.12 9.56 9.28 8.42 5.90 3.24 2.55 2.25