How to prepare 500mM Ammonium Hydroxide solution from 25% Ammonia solution?

28 July 2025 0 756 Report

I have 25% ammonia solution, I want to prepare 500mM Ammonium hydroxide solution (suppose 1 Litre), How much volume (quantity) of 25% ammonia solution I should take?

Badges
Science topic

Is it possible to improve the reforming section of the Haber-Bosch process without using air separation units?

A typical reforming section in a large-scale Haber-Bosch process (Figure 1) comprises two reactors. A mixture of methane (CH4) and steam (H2O) is fed into a primary reformer to produce syngas via...

01 August 2024 7,051 5 View

What does an additional peak in FTIR between 3100 and 3300 nm affect the quality of the material, benzethonium chloride USP??

I do not know much about FTIR! The material Benzethonium Chloride USP was compared to a reference standard in regards to FTIR, as per the USP testing: Identification B. Infrared absorption (FTIR),...

16 July 2024 6,918 7 View

Asked a separate ways?

Dear all, I have a question regarding ways to separate ammonium nitrate and phosphorus pentoxide？

12 July 2024 3,164 2 View

Why flow rate of MFC for pure NH3 gas decreases with time?

We have been using MFC to control the flow rate of pure ammonia gas. The MFC is placed in an oven at 50 deg. C to avoid blockage due to NH3. However, after a few days of usage, the MFC is unable...

11 July 2024 5,796 1 View

65% saturation of ammonium sulfate in 100 ml? (for protein precipitation)?

Hi All: I need to precipitate extracellular protein from supernatant. A bit confused with ammonium sulfate calculation. Should I be adding: 1. 65g of ammonium sulfate in 100 ml of...

09 July 2024 5,508 0 View

Which part did I made a mistake?

I'm a postgraduate student and I'm currently researching ammonia nitrogen degradation through photocatalysis. The following experiment parameters are : 1. 200W Xe Lamp 2. 200mL aqueous ammonia...

10 June 2024 2,657 1 View

How to choose the time and acid-base environment for the Clayson Schmidt reaction?

I want to replicate the third step, but there seems to be no reaction in an alkaline environment. However, sodium hydroxide is used in the literature. Should I switch to an acidic environment

05 June 2024 9,358 1 View

How exactly do we prepare mobile phases used for LC/MS?

I am doing research that requires using LC/MS to analyse my data. I have very little knowledge of chemistry and LCMS. I have read through many posts and articles, but there is not a single place...

03 June 2024 3,963 5 View

Correct spectrophotometry absorbance for colored turbid pond water samples?

I'm dealing with this pond water for analysis of chemical parameters such as (ammonia, nitrite, nitrate, phosphate...etc.) using a visible spectrophotometer while I was preparing standard curves...

03 June 2024 6,841 1 View

Please share the HNMR sample preparation procedure for isotopic labelling test to confirm source of N2 during ENRR to ammonia.?

During electrocatalytic nitrogen reduction to ammonia, we perform isotopic labelling test using HNMR to confirm source of ammonia.

29 May 2024 5,165 0 View