why khp is used as primary standard?
6614
KHP is slightly acidic, and it is often used as a primary standard for acid-base titrations because it is solid and air-stable, making it easy to weigh accurately. ... And then as a weak acid hydrogen phthalate reacts reversibly with water to give hydronium (H3O+) and phthalate ions.
1232513
Standard Temperature and Pressure. Standard temperature is equal to 0 °C, which is 273.15 K. Standard Pressure is 1 Atm, 101.3kPa or 760 mmHg or torr. STP is the "standard" conditions often used for measuring gas density and volume.
1400056
Classify each statement as true or false for the term abbreviated as KHP The formula is HKCgH404. The compound has only one titratable acidic hydrogen. The compound is the same as K2HPO4 A.
51593
A primary standard is a reagent that is extremely pure, stable, it not a hydrate /has no water of hydration, and has a high molecular weight . A secondary standard is a standard that is prepared in the laboratory for a specific analysis. It is usually standardized against a primary standard.
231985
A nominal measure of GDP does not account for changes in the relative purchasing power of a good across time; it ignores inflation and deflation. Purchasing power parity (PPP) compares how many goods and services an exchange-rate-adjusted unit of money can purchase in different countries.
382987
A simple standard is obtained by the dilution of a single element or a substance in a soluble solvent with which it reacts. A primary standard is a reagent that is extremely pure, stable, has no waters of hydration and has high molecular weight.
966062
The kilograms force meter/second unit number 75.00 kgf m/s converts to 1 hp, one horsepower - Metric. It is the EQUAL power value of 1 horsepower - Metric but in the kilograms force meter/second power unit alternative.
597192
A primary standard is some substance such as oxalic acid which can be precisely weighed out in pure form, so that the number of moles present can be accurately determined from the measured weight and the known molar mass. ... Secondary standards can also be prepared by titration against a primary standard solution.
196891
Note: Kilowatt-hour (kWh) is a measure of energy and horsepower (hp) is a measure of power. Therefore you can only convert kilowatt-hour (kWh) directly to horsepower hour (hph) or kilowatts (kW) directly to horsepower (hp). 1 kW = 1.3404825737 hp.
1095576
HCPCS codes are used to give a standardized description of delivering healthcare services. CPT codes are used to describe the services that medical workers have to be acknowledged. The Health Insurance Portability and Accountability Act states that everyone should be free to access HCPCS procedures.
1281734
1 kPa = 0.14503773779 Psi Kilopascal is a metric pressure unit and is equal to 1000 force of newton per square meter. 1 kPa = 0.14503773779 psi. The symbol is "kPa". You may also use pressure conversion to convert all pressure units.
905214
["Specific: be clear about what each KPI will measure, and why it's important.", 'Measurable: the KPI must be measurable to a defined standard.', 'Achievable: you must be able to deliver on the KPI.', 'Relevant: your KPI must measure something that matters and improves performance.']
1182828
There are only three: Myanmar (or Burma), Liberia and the United States. Every other country in the world has adopted the metric system as the primary unit of measurement. How did this one system become so widely adopted? And why are there countries that are holdouts?
1004222
A commonly used primary standard for titration with sodium hydroxide solution is the weak acid potassium hydrogen phthalate or KHP (C8H5O4K). In this reaction as well, one mole of KHP completely reacts with one mole of NaOH. The titration of NaOH with KHP involves adding NaOH from the burette to a known volume of KHP.
390536
Well, we're here to tell you, there is no difference because an HDHP can be an HMO, a PPO, a POS (aka point-of-service), or EPO. An HDHP is defined by its deductible while the other types of plans are defined by their networks.
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A KPI is a critical metric used to evaluate factors crucial to business success. The aim is to drive improvement constructively in a structured and measurable way. ... For this reason, KPIs must align with overall company objectives and strategy. Here is how organisations can use KPIs to improve performance.
861622
And like for all pressure units, SI or not SI, we can use the common prefixes/coefficients in front of them, most commonly used are milli (1/100), centi (1/10), hecto (100), kilo (1000) and mega (1000000). To list a few examples, that already gives us different Pa versions, all being commonly used: Pa, kPa, hPa, MPa.