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To avoid CaF2 precipitation, HCl precipitation is needed in sandstone acidizing.

To avoid CaF2 precipitation, HCl precipitation is needed in sandstone acidizing. Correct Answer True

The statement is true. To avoid CaF2 precipitation, HCl precipitation is needed in sandstone acidizing. The pre-flush of HCl is mainly used to dissolve any carbonates present with the sandstone.

Related Questions

In a 5 litre solution of water and HCl, content of HCl is 20%. In order to attain a desirable result, strong HCl is required. Hence, 10 litres of 100% pure HCl is added. What is the strength of HCl in the mixture now?
CaF2-এর সম্পৃক্ত জলীয় দ্রবণে ফ্লোরাইড আয়নের ঘনমাত্রা 0.00655 gL-1 হলে CaF2 এর দ্রাব্যতা গুণফল কত হবে?
Dr. Xman is diluting concentrated HCl acid by mixing water in it. The quantity of mixture is 32 l. The ratio of concentrated HCl to water is 7 ∶ 1. If 3 l of water is added to the mixture, the ratio of HCl to water changes to new ratio. If he want to change back the new ratio to the original value, how much concentrated HCl is to be added?
Fracture Acidizing has no application in sandstone wells.
Statement: Syrian President Bashar al-Assad has revealed during an interview that a direct clash between the US and Russia in Syria was narrowly avoided "by the wisdom of the Russian leadership".  Which of the following objection(s) might be a probable reason(s) for such a revelation by Syrian President Bashar al-Assad? I. Adding that Syria needs Russian support, Assad said, "At the same time we need to avoid the American foolishness in order to be able to stabilise our country". II. Adding that Syria needs American support, Assad said, "At the same time we need to avoid the American foolishness in order to be able to stabilise our country". III. Adding that Syria needs Russian support, Assad said, "At the same time we need to avoid the Russian foolishness in order to be able to stabilise our country". IV. Adding that Syria needs American support, Assad said, "At the same time we need to avoid the Russian foolishness in order to be able to stabilise our country".
একটি HCl দ্রবনের ঘনত্ব 1.20 গ্রাম/মি.লি। এই দ্রবণে 35%(W/W) HCl এসিড আছে।500 মি.লি. দ্রবণে কি পরিমাল বিশুদ্ধ HCl আছে?
পরীক্ষাগারে Na2CO3 কে HCl দ্বারা ট্রািইটেশন করতে মিথাইল -অরেঞ্জ নির্দেশক ব্যবহৃত হয়। যদি Na2CO3 এর ঘনমাত্রা 0.125M এবং এর 10ml কে ট্রাইটেমন করতে 16ml HCl প্রয়োজন হয়, তাহলে HCl এর ঘনমাত্রা কত হবে?
Louis Pasteur mixes two acids HCL and HNO3 in the ratio 7 ∶ 5 and filled it in a container. When 9 liters of solution is taken out and the can is filled with HNO3, the ratio of HCL and HNO3 becomes 7 ∶ 9. How many liters of HCL was contained by the container initially?
The world’s longest sandstone cave has been discovered in Meghalaya. What is the name of that sandstone cave?
A series of tri-axial compression tests conducted on sandstone samples reveal the following relationship between major and minor principal stresses σ1 = 50 + 30σ3 [stresses are in MPa)
The cohesion in MPa and angle of internal friction in degrees of sandstone respectively are