2018年7月30日 · In my chemistry book I always see a dot for units. For example, atm•L. Does this mean “1 atm per Liter?” By Atm I mean atmospheric pressure, not atom.

2019年11月22日 · I was wondering if there are specific formulae in chemistry for which it is "compulsory" or convenient to use atmosphere (atm) rather than pascal (or even mmHg) as a unit of measurement. Of course, we can convert one into the other, but the choice of using one of the two also conditions other units, such as in the case of volume.

2023年5月11日 · Use whichever value of R has the most common units to help avoid stoichiometry. But you have to use the units as written. Also you misread the table. Should be first two divided by second two. Not all 4 multiplied. So R has to be written as a constant in the units of 0.0821 (L * atm / K * mol) “0.0821 L atm/K mol” You cant use 0.0821.

2017年5月14日 · As atm a t m is a multiple of N m2 N m 2 and L L is a multiple of m3 m 3, then Latm L a t m is a measure of joules, the unit of energy, which is kgm2 s2 k g m 2 s 2 in base SI units.

2019年1月3日 · Try to express Kc or Kp, say, for NX2OX4 − ⇀ ↽ − 2NOX2 and see how "dimensionless" they are. Equilibrium constant can only appear dimensionless when it so happens that the units are cancelled out.

2015年10月30日 · I surfed through the internet and visited a number of chemistry websites but only in vain. I couldn't find an answer. Please help! Your quick response will be appreciated.

2015年4月8日 · In addition to the confusion of the two different units, the unit names and unit symbols are sometimes mixed up. The name of one unit is “torr” and its symbol is “Torr”. The name of the other unit is “conventional millimetre of mercury” and its symbol is “mmHg”.

2016年2月18日 · The unit must be given along with the numerical value. The exponent can also be derived from the stoichiometric coefficients as shown above. In the special case that the exponent is zero the unit of measurement is 1, i.e. neither Pa, nor atm, nor Torr, or any other unit of pressure measurement.

2015年6月6日 · The standard change in free energy, which is used to determine the equilibrium constant Kp is based on the pure reactants at 1 atm going to pure products at 1 atm. Therefore, the partial pressure must be expressed in atm in order to be consistent with Kp. This essentially normalizes the partial pressure by 1 atm.

2021年7月1日 · However, for reactions with an unequal number of moles on the reactant and product side, the equilibrium constant has units in terms of concentration or pressure, allowing me to make the numerical value arbitrarily large or small by choosing the appropriate units.